Ko Hon-Man

Six employees are sent back to primary school for a retraining program, joining real fourth-grade students in Class 4S. As unlikely friendships form and personal growth unfolds, a rule-breaking incident threatens it all.

Lam Muk Sam, a once-successful but now unemployed car salesman, hits rock bottom after losing his job during the post-pandemic economy. Initially reluctant, he is persuaded by his daughter to start a new business called "Uncle for Rent." As Lam Muk Sam and his group of friends—each with their own unique skills—help clients solve their problems, they rediscover their own values and passion for life. Through this venture, Lam Muk Sam not only helps others but also finds a path to clean up his own messy life and reconnect with his true self.

Twenty years ago, Takeda Kunizen secretly saw his father presenting a scroll to his younger brother Kosho. Kokatsu believed that the scroll contained "martial arts secret techniques". One day, a new immigrant, Xiaoyue, was bullied. A quasi-Olympic karate player, Zhuang Hui, got involved. Zhihao, a gangster who was put on a horse by a gangster, was involved. He was just passing by to stop the fight.