At 29, Masakazu Sakaima slogs through his job at a food company and his performance lands him a transfer; he's irked by his laid-back colleague's attitude, but things take a turn when he meets Kazutoyo Yamaji through a Rental Uncle service.

Masakazu panics when he feels Yamagishi might have attempted suicide; Yamagishi is alive, but he's done with the company and decides to quit, alleging harassment; the turn of events results in Masakazu getting suspended.

Masakazu finds himself in hot water with a looming lawsuit after he refuses to own up to accusations of workplace harassment; trainee teacher Sakura approaches Yamaji with a complaint about bullying in his class.

Trainee teacher Sakura's boyfriend causes a stir by bursting into school and announcing to everyone that Yamaji is still a virgin; Maribu juggles his new role as manager of a bustling girls' bar and Yamaji and Miyashita find a new adventure.

Masakazu worries about his sister after he finds out she's working at Maribu's girls' bar and ropes Aso into checking out the bar; Masakazu is shocked to hear that there is an opening for a Sendai branch manager.

Masakazu is stunned to discover that Maribu is dating his sister, despite being married with a child; he heads over to confront Maribu; Yamaji's dedication to helping Daigo, a child with a learning disability, brings him closer to the boy's mother.