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.

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 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.