13-year-old flirtatious boy Donnie (Adam Sandler Adam Sandler) is bohemian by nature, smoking and drinking, and even more outrageous, he has sex with his 22-year-old female teacher and makes him pregnant. The teacher goes to prison and entrusts the child Han (Andy Samberg Andy Samberg) to Donnie. However, Donnie was still the flirtatious boy, who didn't do his duty as a reliable father at all, so when Han turned 18, he left his father angrily. Now 42-year-old Downey has become a bored alcoholic and owes enough taxes to keep him in prison for three years. However, by chance, Downey learned in the newspaper that his son Han had a successful career and was about to get married. In order to avoid prison, he decided to repair his relationship with his son to seek financial support. However, the uninvited father was not welcomed by his son, and a series of fierce collisions between the two men not only upset the Han family, but also messed up the marriage.