Uncle, a charming yet lecherous toilet designer and neglectful single parent, spends his days flirting with women and boasting about his unique ability to guess a lady's hip size at a glance. However, his mundane routine takes a wild turn when he gets sucked into a toilet and gains real superpowers from the Space Peace Republic Alliance Hero Committee. The catch? He transforms into an unattractive and unrecognizable overweight hero, struggling to disclose his true identity. Rejected by his daughter Min-chan, who refuses to believe the repulsive hero is her father, Uncle teams up with his eccentric neighbor, Yamada-san, known for his streaking antics. Together, they embark on a comedic journey to win back Min-chan's trust, facing off against peculiar foes and forming unusual alliances. Packed with risqué humor and outrageous situations, To Be Hero chronicles Uncle's quest to protect Earth from extraterrestrial threats and, more importantly, to reunite with his daughter.