This is a game about how to steal a cat, the player will play the role of senior high school girl Tang Qi in the game, explore the scene, escape, solve puzzles and dialogue. When Tang Qi's best friend's secret cat ownership was discovered by her strict and controlling mother, she took the cat away and found an adoption for the cat - both of whom are teachers at Tang Qi's boarding high school. Seeing the friend who lost her cat increasingly depressed, Tang Qi decided to secretly investigate on campus, lock the identity of the adopter and the trace of the cat, and then take the cat out of school on the holiday day after the end of a week. However, the strange girl at the end of the hallway and the locked room where she can't find the key indicate that this adventure is not as simple as she imagined.