6 girls were born fearless and formed a group named Le Sserafim. Each of them has a skill they are good at. Sakura is good at ninja skills. Chaewon is good at gun skills. Yunjin is good at hacking and sensing. Kazuha is good at boxing and fighting. Garam is good at fighting and finding clues. Eunchae is good at spying. They are known as the most significant mafia hero group from Leniverse. They usually help solve cases by discovering clues, solving puzzles, and accomplishing tasks in different rooms to find out the truth behind each case. Once they find out the truth, they seek revenge for the victim as their mafia self. [Disclaimer] This book and the storyline is inspired by a Chinese variety show named Great Escape.