Haeseong is gradually dying in this life where he doesn't look forward to tomorrow.
He planned to end his meaningless breathing himself but ends up being brought back to life by the firefighter Hyeonwoo.
Haeseong was sure there would be no reason to run into Hyeonwoo anymore, as he successfully saved him, but this man seems nosier than he thought.
Hyeonwoo shows up again with a bag full of adult goods for the sake of Haeseong, who takes care of his insomnia by having sex!