One night at a bar, a man gets a call from his wife, Katy. When he picks up, all he can hear are muffled bits of sentences that create a clear picture—she's cheating on him. This explains the long nights at "work" she's been taking since the start of this particular case. He tries to call her back, but it goes to voicemail.

The next morning she's gone before he wakes. He looks around at their things in the apartment, then goes to work and then the gym, eavesdropping on other people's conversations along the way. At the gym, he can't bring himself to change out of his clothes, and ends up leaving, abandoning his gym bag there and everything. This is the way it goes for the next few days—he wanders aimlessly around New York during lunch breaks, after work, whenever. He eavesdrops, he buys food but doesn't eat it.

Then Katy calls him from work one night and says she'll be late again. He hangs up on her and looks around at their stuff. He starts dividing it all up in his head—stuff that belongs to her, stuff that belongs to him, stuff that belongs to them together. He feels a desperate need to talk to someone, but can't bring himself to call a friend on the phone. So instead he goes to the window, calls down at people passing by. After a few wrong calls, unhelpful people, he ends up talking to a guy for some time.

After that man moves on he calls to the next that he wants to get rid of some stuff, that he should come up and take something. The guy assents, and takes a lamp and some pillows. By the time Katy is coming home, people are leaving their apartment with her suitcases, and she finds her husband going through their wedding album with another man at home.