Old Man, a charismatic but hapless individual, navigates the challenges of his personal life, including a stagnant career as a toilet seat designer and the responsibility of caring for his intelligent and athletic daughter, Min-chan, following his divorce.
A rough-around-the-edges individual finds himself in a bizarre situation when he's suddenly pulled into his toilet while using it. As he navigates this unorthodox predicament, he's compelled to make significant sacrifices, including a dramatic physical transformation.