Mr. Back

A scrooge-like chairman with a nasty temper, Choi Go Bong has to keep both his company and his reckless son Dae Han in line. He meets a kind woman, Eun Ha Soo, who begins to soften his cold heart.

Magically transformed into his younger self, Chairman Choi enjoys the pleasures and perils of his new identity. He tries to find the source of the mysterious money hidden in the trunk that was found at the scene of the accident.

Choi Shin Hyung conducts his own investigation into who hid the slush fund money in his car. At the same time, he discovers that living without money has its own troubles and obtains a job at Daehan.

Believing Chairman Choi to be gone for good, Daehan Group must decide upon a new successor. Choi Shin Hyung decides to take matters into his own hands, and Dae Han copes with his father's departure.

Choi Shin Hyung jumps into his new position at Daehan Group, much to his family's grumblings. His interest towards Eun Ha Soo grows, and he finds himself in quite a few embarassing situations.

Choi Shin Hyung finds himself penniless after he's ousted as chairman. Dae Han continues to find ways to spend time with Ha Soo, who begins to show interest in Shin Hyung.

Choi Shin Hyung tries to dig up information on Choi Young Dal, who's been firing the employees. He quickly find that his growing feelings towards Ha Soo are also accompanied by jealousy when another suitor tries to win her over.

Dae Han is caught up in a scandal as soon as he proclaims himself to be Daehan Group's chairman. Choi Shin Hyung discovers that there's a window to how long he can remain young.