A factory intern’s fatal injury brings Han Jeong-u and Han Geu-ru to his room, where his goals for the future and love for his parents come into view.

The trauma cleaners search for the loved one of a slain doctor to hand-deliver a box full of regrets, hopes and an unrealized future for two.

Sang-gu and Geu-ru try to give a proper sendoff to a doting couple who called Move to Heaven after deciding to leave the world together hand in hand.

Sang-gu is coerced into signing up for a fight in exchange for Geu-ru and the house deed. On a special day, Geu-ru leads Sang-gu down memory lane.

Cho Sang-gu moves in as Geu-ru's legal guardian and new colleague. Geu-ru searches for a mother's message in her stash of cash and bank receipts.

A suit store owner reveals a mother's longstanding wish. Sang-gu is reminded of his costly promise. The trauma cleaners arrive at a bloody crime scene.

A user manual for a device unseen at the crime scene keeps Geu-ru up at night. Sang-gu must make a loan payment by putting up either cash or his fists.

Sang-gu begrudgingly took Kim Su-cheol under his wing 10 years ago, unaware that his mentorship would bloom into brotherhood and end in destruction.

Matthew Green's search for his birth mother ends with a heartbreaking misunderstanding. Sang-gu sets out to enter his final fight.

Not yet ready to let Jeong-u go, Geu-ru runs away from home. As their cohabitation comes to an end, Sang-gu's qualification as a guardian is determined.