Track List:
01. Wendy [Red Velvet] - Let You Know
02. Chung Dong Ha - The Day
03. Kang In - Memories
04. Wendy [Red Velvet] - Let You Know (Inst.)
05. Chung Dong Ha - The Day (Inst.)
06. Kang In - Memories (Inst.)
07. D-Day Main Theme
08. Disaster
09. Aftereffect
10. Emergency
11. Endless Mission
12. Risky Surgery
13. Confrontation
14. Conspiracy
15. Salvation
16. Holy Desire
17. Consolation
18. Accident Field
19. Tragedy
20. Patience
21. Vocatio