Modern youth travel through the desperate situation of the Siheyuan, awaken the sign-in system to counterattack and survive, use god-level understanding and martial arts to reveal the truth about their father's death, and fight against the hypocritical villain Yi Zhonghai. They work step by step in the Siheyuan intertwined with conspiracy and warmth, defeat the conspiracy, protect their loved ones, and finally go to Hong Kong to found the Dragon Teeth Organization and become a generation of heroes!