diff --git a/backend/src/main/java/com/spaceme/collection/service/CollectionService.java b/backend/src/main/java/com/spaceme/collection/service/CollectionService.java
index 1a39eb4..9e184fa 100644
--- a/backend/src/main/java/com/spaceme/collection/service/CollectionService.java
+++ b/backend/src/main/java/com/spaceme/collection/service/CollectionService.java
@@ -56,7 +56,8 @@ private List<PlanetThemeResponse> getPlanetThemeResponses(Long galaxyThemeId, Ma
     private ThemeStatus determineStatus(Status status) {
         return switch (status) {
             case CLEAR -> ACQUIRED;
-            case SOON, FAILED, ACQUIRABLE, ON_PROGRESS -> DISCOVERED;
+            case FAILED, ACQUIRABLE, ON_PROGRESS -> DISCOVERED;
+            case SOON -> HIDDEN;
         };
     }
 }
diff --git a/backend/src/main/java/com/spaceme/planet/controller/PlanetController.java b/backend/src/main/java/com/spaceme/planet/controller/PlanetController.java
index 9ba0a56..35de49b 100644
--- a/backend/src/main/java/com/spaceme/planet/controller/PlanetController.java
+++ b/backend/src/main/java/com/spaceme/planet/controller/PlanetController.java
@@ -33,4 +33,9 @@ public ResponseEntity<RatioResponse> acquirePlanet(
     ) {
         return ResponseEntity.ok(planetService.acquirePlanet(userId, planetId));
     }
+
+    @PutMapping("/test/{planetId}")
+    public void updatePlanetAndMissions(@PathVariable Long planetId) {
+        planetService.updatePlanetAndMissions(planetId);
+    }
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/spaceme/planet/service/PlanetService.java b/backend/src/main/java/com/spaceme/planet/service/PlanetService.java
index 3b0df2d..5ffcad8 100644
--- a/backend/src/main/java/com/spaceme/planet/service/PlanetService.java
+++ b/backend/src/main/java/com/spaceme/planet/service/PlanetService.java
@@ -1,9 +1,11 @@
 package com.spaceme.planet.service;
 
 import com.spaceme.collection.service.DynamicProbabilityGenerator;
+import com.spaceme.common.domain.Status;
 import com.spaceme.common.exception.BadRequestException;
 import com.spaceme.common.exception.ForbiddenException;
 import com.spaceme.common.exception.NotFoundException;
+import com.spaceme.mission.domain.Mission;
 import com.spaceme.mission.repository.MissionRepository;
 import com.spaceme.mission.service.MissionService;
 import com.spaceme.planet.domain.Planet;
@@ -101,4 +103,15 @@ public void validatePlanet(Long userId, Long planetId) {
                 .filter(Boolean::booleanValue)
                 .orElseThrow(() -> new ForbiddenException("접근 권한이 없습니다."));
     }
+
+    @Transactional
+    public void updatePlanetAndMissions(Long planetId) {
+
+        Planet planet = planetRepository.findById(planetId)
+                .orElseThrow(() -> new NotFoundException("행성을 찾을 수 없습니다."));
+
+        List<Mission> missions = missionRepository.findAllByPlanetId(planet.getId());
+        missions.forEach(mission -> mission.updateStatus(Status.CLEAR));
+        planet.updateStatus(Status.ACQUIRABLE);
+    }
 }