diff --git a/scripts/storyboard/ch1/ch1_1_preassign.dsc b/scripts/storyboard/ch1/ch1_1_preassign.dsc
index 45afbaa..fea857d 100644
--- a/scripts/storyboard/ch1/ch1_1_preassign.dsc
+++ b/scripts/storyboard/ch1/ch1_1_preassign.dsc
@@ -34,6 +34,7 @@ ch1_1_marie_interact:
         1:
             click trigger:
                 script:
+                - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
                 - if <player.flag[textbox_state].if_null[null]> != null:
                     - stop
                 - engage player duration:999999s
@@ -97,9 +98,11 @@ ch1_1_marie_interact:
                     - run storyboard_npc_state_set def.player:<player> def.name:marie def.key:opinion def.value:-1
                 - zap 2
                 - disengage player
+                - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
         2:
             click trigger:
                 script:
+                - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
                 - if <player.flag[textbox_state].if_null[null]> != null:
                     - stop
                 - engage player duration:999999s
@@ -235,3 +238,4 @@ ch1_1_marie_interact:
                 - inventory update
                 - zap 3
                 - disengage player
+                - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
diff --git a/scripts/storyboard/dialogue/dialogue_npc_kobayashi.dsc b/scripts/storyboard/dialogue/dialogue_npc_kobayashi.dsc
index 632faf6..b3d252b 100644
--- a/scripts/storyboard/dialogue/dialogue_npc_kobayashi.dsc
+++ b/scripts/storyboard/dialogue/dialogue_npc_kobayashi.dsc
@@ -14,6 +14,7 @@ dialogue_npc_kobayashi:
         1:
             click trigger:
                 script:
+                - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
                 - if <player.flag[textbox_state].if_null[null]> != null:
                     - stop
                 - engage player
@@ -45,3 +46,4 @@ dialogue_npc_kobayashi:
                     - ~run textbox_write def.player:<player> def.queue:<queue> "def.line3s:Indeed, luv."
                 - wait 1s
                 - disengage player
+                - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
diff --git a/scripts/storyboard/dialogue/dialogue_npc_patchouli.dsc b/scripts/storyboard/dialogue/dialogue_npc_patchouli.dsc
index a65c9a5..9a259cb 100644
--- a/scripts/storyboard/dialogue/dialogue_npc_patchouli.dsc
+++ b/scripts/storyboard/dialogue/dialogue_npc_patchouli.dsc
@@ -14,6 +14,7 @@ dialogue_npc_patchouli:
         1:
             click trigger:
                 script:
+                - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
                 - if <player.flag[textbox_state].if_null[null]> != null:
                     - stop
                 - engage player
@@ -23,3 +24,4 @@ dialogue_npc_patchouli:
                 - wait 1s
                 - disengage player
                 - ratelimit <player> 10t
+                - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
diff --git a/scripts/storyboard/dialogue/dialogue_npc_ryuko.dsc b/scripts/storyboard/dialogue/dialogue_npc_ryuko.dsc
index d2343cb..33d56ee 100644
--- a/scripts/storyboard/dialogue/dialogue_npc_ryuko.dsc
+++ b/scripts/storyboard/dialogue/dialogue_npc_ryuko.dsc
@@ -14,6 +14,7 @@ dialogue_npc_ryuko:
         1:
             click trigger:
                 script:
+                - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
                 - if <player.flag[textbox_state].if_null[null]> != null:
                     - stop
                 - engage player
@@ -29,3 +30,4 @@ dialogue_npc_ryuko:
                 - wait 1s
                 - disengage player
                 - ratelimit <player> 10t
+                - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
diff --git a/scripts/storyboard/intro/intro_interactions.dsc b/scripts/storyboard/intro/intro_interactions.dsc
index 16a90fd..4145a2f 100644
--- a/scripts/storyboard/intro/intro_interactions.dsc
+++ b/scripts/storyboard/intro/intro_interactions.dsc
@@ -15,11 +15,13 @@ intro_interact_posters_task:
     debug: false
     type: task
     script:
+    - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:Book-related posters are on the wall."
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:<&o><&dq>Screw that. I'm running away.<&dq>"
     - ~run textbox_write def.player:<player>  def.queue:<queue> def.line3s:<&o><&dq>Where?<&dq>
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:<&o><&dq>Dunno. Do you want to come?<&dq>"
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:<&o><&dq>Yes,<&dq> I said without thinking."
+    - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
 
 # Cirno
 intro_interact_cirno:
@@ -38,8 +40,10 @@ intro_interact_cirno_task:
     debug: false
     type: task
     script:
+    - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:A quality, soft plushie of a beloved$$nlcharacter."
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:It seems familiar, as if there are a$$nlsubstantial amount of images circulating$$nlaround with this character."
+    - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
 
 # Laptop
 intro_interact_laptop:
@@ -58,6 +62,7 @@ intro_interact_laptop_task:
     debug: false
     type: task
     script:
+    - run storyboard_player_begin_atomic_sequence def.queue:<queue> def.player:<player>
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:It looks like a game is booted up.$$nlYou can see a city, and it looks like..."
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:. . ."
     - ~run textbox_write def.player:<player>  def.queue:<queue> "def.line3s:It's <bold>you!$$nl. . .$$nlWell, it's your character."
@@ -197,3 +202,4 @@ intro_interact_laptop_task_role_callback:
     - adjust <player> show_to_players
     - flag <player> intro:done
     - execute as_player player:<player> spawn
+    - run storyboard_player_end_atomic_sequence def.queue:<queue> def.player:<player>
diff --git a/scripts/storyboard/tasks/storyboard_player_tasks.dsc b/scripts/storyboard/tasks/storyboard_player_tasks.dsc
index 9023fbd..1295fd1 100644
--- a/scripts/storyboard/tasks/storyboard_player_tasks.dsc
+++ b/scripts/storyboard/tasks/storyboard_player_tasks.dsc
@@ -60,6 +60,36 @@ storyboard_player_unfreeze:
     - adjust <player> walk_speed:<player.flag[storyboard_freeze_speed]>
     - flag <player> storyboard_freeze_speed:!
 
+# Marks the script after this task as an atomic sequence, meaning that
+# the script either fully completes or is restored back to this point.
+# This task does not ensure the atomicity, instead it will block any
+# futher executions of the given script (deduced from the queue) until
+# storyboard_player_end_atomic_sequence is called, or until the player
+# logs off (which basically negates the atomicity). The developer must
+# ensure that the script enclosed by the begin and end tasks is atomic.
+storyboard_player_begin_atomic_sequence:
+    debug: false
+    type: task
+    definitions: queue|player
+    script:
+    - announce to_ops <[queue].script.name>
+    - if <[player].flag[storyboard_atomic].if_null[<map[]>].contains[<[queue].script.name>]>:
+        - queue <[queue]> stop
+        - stop
+    - flag <[player]> storyboard_atomic:<[player].flag[storyboard_atomic].if_null[<map[]>].with[<[queue].script.name>].as[<util.time_now>]>
+
+# Ends the atomic sequence above this task. See the sibling task
+# storyboard_player_begin_atomic_sequence for more details.
+storyboard_player_end_atomic_sequence:
+    debug: false
+    type: task
+    definitions: queue|player
+    script:
+    - if !<[player].flag[storyboard_atomic].if_null[<map[]>].contains[<[queue].script.name>]>:
+        - debug error "Tried ending storyboard atomic sequence <[queue].script.name> before storyboard_player_begin_atomic_sequence was called! (Player UUID <[player].uuid>)"
+        - stop
+    - flag <[player]> storyboard_atomic:<[player].flag[storyboard_atomic].if_null[<map[]>].exclude[<[queue].script.name>]>
+
 ## Internal only!
 storyboard_player_freeze_check:
     debug: false
@@ -68,3 +98,12 @@ storyboard_player_freeze_check:
         on player joins:
         - if <player.has_flag[storyboard_freeze_speed]>:
             - run storyboard_player_unfreeze def.player:<player>
+
+storyboard_player_atomic_sequence_disconnect_handler:
+    debug: false
+    type: world
+    events:
+        on player quit:
+        - flag <player> storyboard_atomic:!
+        on player joins:
+        - flag <player> storyboard_atomic:!