While doing "couples counseling" with her ex-boyfriend Jin-ho, Song-yi learns about the secret hobby of his wife, Chan-yang. Yi-an, the cafe owner, suggests an after-work hangout with Song-yi, but this leads to a misunderstanding with Hyeon-woo, a divorce lawyer, who sees them together.

Song-yi, hoping to spark a new romance, joins a running club. She's surprised to find Hyeon-woo there, and on the way home from the after-run gathering, they mistake Ha-na's husband, Seong-tae, for an escaped convict. The three of them end up unexpectedly catching the real fugitive together.