diff --git a/cmd/evening_detective/main.go b/cmd/evening_detective/main.go
index 5400fb7..0333245 100644
--- a/cmd/evening_detective/main.go
+++ b/cmd/evening_detective/main.go
@@ -13,6 +13,7 @@ import (
 	"evening_detective/internal/services/link"
 	"evening_detective/internal/services/pdf"
 	"evening_detective/internal/services/story_service"
+	"evening_detective/internal/services/story_storage"
 	proto "evening_detective/proto"
 	"io/fs"
 	"log"
@@ -54,7 +55,9 @@ func main() {
 
 	storyFilepath := config.GetStoryFilepath()
 
-	storyService, err := story_service.NewStoryService(cleaner, formatter, storyFilepath)
+	storyStorage := story_storage.NewStoryStorage(storyFilepath)
+
+	storyService, err := story_service.NewStoryService(cleaner, formatter, storyStorage)
 	if err != nil {
 		log.Fatalln(err)
 	}
diff --git a/internal/services/services.go b/internal/services/services.go
index 359ff53..f04837e 100644
--- a/internal/services/services.go
+++ b/internal/services/services.go
@@ -230,7 +230,7 @@ func (s *Services) UpdateNode(ctx context.Context, req *proto.UpdateNodeReq) (*p
 		Text:         req.Node.Text,
 		Applications: applications,
 	}
-	if err := s.storyService.UpdatePlace(req.Code, node); err != nil {
+	if err := s.storyService.UpdatePlace(ctx, req.Code, node); err != nil {
 		return nil, err
 	}
 	return &proto.UpdateNodeRsp{}, nil
diff --git a/internal/services/story_service/dependency.go b/internal/services/story_service/dependency.go
new file mode 100644
index 0000000..eb53be0
--- /dev/null
+++ b/internal/services/story_service/dependency.go
@@ -0,0 +1,10 @@
+package story_service
+
+import (
+	"context"
+)
+
+type IStoryStorage interface {
+	Load(ctx context.Context) (*Story, error)
+	Save(ctx context.Context, story *Story) error
+}
diff --git a/internal/services/story_service/service.go b/internal/services/story_service/service.go
index 9e51588..02e5d10 100644
--- a/internal/services/story_service/service.go
+++ b/internal/services/story_service/service.go
@@ -2,73 +2,49 @@ package story_service
 
 import (
 	"context"
-	"encoding/json"
 	"evening_detective/internal/modules/cleaner"
 	"evening_detective/internal/modules/formatter"
-	"fmt"
-	"log"
-	"os"
 	"regexp"
 	"strings"
 )
 
 type StoryService struct {
-	cleaner   cleaner.ICleaner
-	formatter formatter.IFormatter
-	filepath  string
-	story     *Story
+	cleaner      cleaner.ICleaner
+	formatter    formatter.IFormatter
+	story        *Story
+	storyStorage IStoryStorage
 }
 
 func NewStoryService(
 	cleaner cleaner.ICleaner,
 	formatter formatter.IFormatter,
-	filepath string,
+	storyStorage IStoryStorage,
 ) (*StoryService, error) {
 	s := &StoryService{
-		cleaner:   cleaner,
-		formatter: formatter,
-		filepath:  filepath,
+		cleaner:      cleaner,
+		formatter:    formatter,
+		storyStorage: storyStorage,
 	}
-	if err := s.Load(); err != nil {
+	story, err := s.storyStorage.Load(context.Background())
+	if err != nil {
 		return nil, err
 	}
+	s.story = story
 	return s, nil
 }
 
-func (s *StoryService) Load() error {
-	data, err := os.ReadFile(s.filepath)
-	if err != nil {
-		return fmt.Errorf("story file %s not found", s.filepath)
+func (s *StoryService) Update(ctx context.Context) error {
+	if err := s.storyStorage.Save(ctx, s.story); err != nil {
+		return err
 	}
-	log.Printf("load story from: %s", s.filepath)
-	story := &Story{}
-	if err := json.Unmarshal(data, story); err != nil {
+	story, err := s.storyStorage.Load(ctx)
+	if err != nil {
 		return err
 	}
 	s.story = story
 	return nil
 }
 
-func (s *StoryService) Save() error {
-	story := s.story
-	data, err := json.Marshal(story)
-	if err != nil {
-		return err
-	}
-	if err := os.WriteFile(s.filepath, data, 0x777); err != nil {
-		return err
-	}
-	log.Printf("save story to: %s", s.filepath)
-	return nil
-}
-
-func (s *StoryService) Update() error {
-	if err := s.Save(); err != nil {
-		return err
-	}
-	return s.Load()
-}
-
 func (s *StoryService) GetPlace(code string) *Place {
 	if strings.HasPrefix(code, "[") || strings.HasSuffix(code, "]") {
 		return &Place{
@@ -107,7 +83,7 @@ func (s *StoryService) GetPlace(code string) *Place {
 	}
 }
 
-func (s *StoryService) UpdatePlace(code string, node *GraphNode) error {
+func (s *StoryService) UpdatePlace(ctx context.Context, code string, node *GraphNode) error {
 	if code != "" && node.Code == "" {
 		for i := range s.story.Places {
 			if s.story.Places[i].Code == code {
@@ -115,7 +91,7 @@ func (s *StoryService) UpdatePlace(code string, node *GraphNode) error {
 				break
 			}
 		}
-		s.Update()
+		s.Update(ctx)
 		return nil
 	}
 	nodeApplications := make([]*Application, 0, len(node.Applications))
@@ -137,7 +113,7 @@ func (s *StoryService) UpdatePlace(code string, node *GraphNode) error {
 				Applications: nodeApplications,
 			},
 		)
-		s.Update()
+		s.Update(ctx)
 		return nil
 	}
 	if code == "" || node.Code == "" {
@@ -170,7 +146,7 @@ func (s *StoryService) UpdatePlace(code string, node *GraphNode) error {
 			}
 		}
 	}
-	s.Update()
+	s.Update(ctx)
 	return nil
 }
 
diff --git a/internal/services/story_storage/service.go b/internal/services/story_storage/service.go
new file mode 100644
index 0000000..41d604f
--- /dev/null
+++ b/internal/services/story_storage/service.go
@@ -0,0 +1,45 @@
+package story_storage
+
+import (
+	"context"
+	"encoding/json"
+	"evening_detective/internal/services/story_service"
+	"fmt"
+	"log"
+	"os"
+)
+
+type service struct {
+	filepath string
+}
+
+func NewStoryStorage(filepath string) story_service.IStoryStorage {
+	return &service{
+		filepath: filepath,
+	}
+}
+
+func (s *service) Load(ctx context.Context) (*story_service.Story, error) {
+	data, err := os.ReadFile(s.filepath)
+	if err != nil {
+		return nil, fmt.Errorf("story file %s not found", s.filepath)
+	}
+	log.Printf("load story from: %s", s.filepath)
+	story := &story_service.Story{}
+	if err := json.Unmarshal(data, story); err != nil {
+		return nil, err
+	}
+	return story, nil
+}
+
+func (s *service) Save(ctx context.Context, story *story_service.Story) error {
+	data, err := json.Marshal(story)
+	if err != nil {
+		return err
+	}
+	if err := os.WriteFile(s.filepath, data, 0x777); err != nil {
+		return err
+	}
+	log.Printf("save story to: %s", s.filepath)
+	return nil
+}