A cinematic special for the Infinite Challenge skit, Muhan Company.

Sangtae and his teenage daughter Doyeon are constantly arguing and haven't had a genuine conversation in years. When their souls are switched by a magical force for seven days, they must learn to tackle the awkward and unfamiliar situation in each other's shoes.

A rebellious high school student sees his life take a strange turn when he goes to the grocery store and someone leaves a baby in his shopping cart, along with a note claiming he's the father.