diff --git a/module/campaign/campaign_ocr.py b/module/campaign/campaign_ocr.py
index e5fa445b0..0af1809d9 100644
--- a/module/campaign/campaign_ocr.py
+++ b/module/campaign/campaign_ocr.py
@@ -45,6 +45,9 @@ def separate_name(name):
     elif name[0] in 'abcdef':
         return name[0], name[-1]
 
+    logger.warning(f'Unknown stage name: {name}')
+    return name[0], name[1:]
+
 
 class CampaignOcr:
     stage = {}
@@ -137,7 +140,7 @@ class CampaignOcr:
         self.stage = {}
         buttons = self.extract_campaign_name_image(image)
 
-        ocr = Ocr(buttons, lang='stage')
+        ocr = Ocr(buttons, lang='stage', letter=(255, 255, 255), back=(102, 102, 102), threshold=180)
         result = ocr.ocr(image)
         if not isinstance(result, list):
             result = [result]
diff --git a/module/config/config.py b/module/config/config.py
index a90b1f242..21f2d7ab0 100644
--- a/module/config/config.py
+++ b/module/config/config.py
@@ -198,7 +198,7 @@ class AzurLaneConfig:
     MAP_HAS_MOVABLE_ENEMY = False
     MAP_HAS_SIREN = False
     MAP_HAS_DYNAMIC_RED_BORDER = False
-    MAP_SIREN_MOVE_WAIT = 1.8  # The enemy moving takes about 1.5 ~ 1.8s.
+    MAP_SIREN_MOVE_WAIT = 1.5  # The enemy moving takes about 1.2 ~ 1.5s.
     MAP_SIREN_COUNT = 0
     MAP_MYSTERY_HAS_CARRIER = False
     MAP_GRID_CENTER_TOLERANCE = 0.1
diff --git a/module/handler/enemy_searching.py b/module/handler/enemy_searching.py
index 0cecf7fad..46658d933 100644
--- a/module/handler/enemy_searching.py
+++ b/module/handler/enemy_searching.py
@@ -9,6 +9,7 @@ from module.map.exception import CampaignEnd
 class EnemySearchingHandler(InfoBarHandler):
     MAP_ENEMY_SEARCHING_OVERLAY_TRANSPARENCY_THRESHOLD = 0.5  # Usually (0.70, 0.80).
     MAP_ENEMY_SEARCHING_TIMEOUT_SECOND = 4.5
+    in_stage_timer = Timer(1)
 
     def enemy_searching_color_initial(self):
         MAP_ENEMY_SEARCHING.load_color(self.device.image)
@@ -23,11 +24,12 @@ class EnemySearchingHandler(InfoBarHandler):
 
     def handle_in_stage(self):
         if self.is_in_stage():
-            logger.info('In stage.')
-            # self.device.sleep(0.5)
-            self.ensure_no_info_bar(timeout=1.2)
-            raise CampaignEnd('In stage.')
+            if self.in_stage_timer.reached():
+                logger.info('In stage.')
+                self.ensure_no_info_bar(timeout=1.2)
+                raise CampaignEnd('In stage.')
         else:
+            self.in_stage_timer.reset()
             return False
 
     def is_in_stage(self):
diff --git a/module/handler/fast_forward.py b/module/handler/fast_forward.py
index 94c423311..eeaa2584b 100644
--- a/module/handler/fast_forward.py
+++ b/module/handler/fast_forward.py
@@ -17,15 +17,16 @@ class FastForwardHandler(ModuleBase):
 
     def handle_fast_forward(self):
         if not self.appear(MAP_STAR_1) or not self.appear(MAP_STAR_2) or not self.appear(MAP_STAR_3):
+            self.config.ENABLE_FAST_FORWARD = False
             logger.info('Campaign is not 3-star cleared.')
             return False
         if not self.appear(MAP_GREEN):
+            self.config.ENABLE_FAST_FORWARD = False
             logger.info('Campaign is not green sea.')
             return False
 
         if not fast_forward.appear(main=self):
             self.config.ENABLE_FAST_FORWARD = False
-            self.config.MAP_HAS_AMBUSH = True
             logger.info('No fast forward mode.')
             return False
 
diff --git a/module/map/fleet.py b/module/map/fleet.py
index 68b011692..c6fe7663b 100644
--- a/module/map/fleet.py
+++ b/module/map/fleet.py
@@ -100,7 +100,7 @@ class Fleet(Camera, MapOperation, AmbushHandler):
             arrived = False
             # Wait to confirm fleet arrived. It does't appear immediately if fleet in combat .
             add = self.config.MAP_SIREN_MOVE_WAIT * self.config.MAP_SIREN_COUNT \
-                if not self.config.ENABLE_FAST_FORWARD else 0
+                if self.config.MAP_HAS_MOVABLE_ENEMY and not self.config.ENABLE_FAST_FORWARD else 0
             arrive_timer = Timer(0.3 + add)
             arrive_unexpected_timer = Timer(1.5 + add)
             # Wait after ambushed.