Jiyoung sits in front of the same bus stop at the same hour every night; Hyunmin, who takes the last bus after work and gets off at the same stop, notices her; one rainy night, he musters up the courage to talk to her and offers her his umbrella.

Sunhae rents a place in the middle of an alley where the realtor assures to be quiet, but she hears someone singing loudly every night outside.

Detective Sungsik investigates an old man's death, that happened in his district; the cause seems to be a natural death, but everything at the scene looks unnatural in his eyes.

On a rainy night, a bus filled with passengers leaves the bus garage; the driver changes the bus sign to not in service and tries to stop taking passengers; but things take an unexpected turn.