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.

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.

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.

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.

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.