I've slept so much the past day or so.

A young man who lives with his family under a tyrannical regime. Each house has a robot/bomb which keeps an eye on the inhabitants. Their robot becomes infected by a virus (maybe?) and keeps going after the members of the family until the young man lures it to a vacated part of the house and shoots it with a contraband gun, setting off an explosion. The police and a government agent arrives, and the young man successfully lies to them, but knows once they investigate they will figure it out, so he must leave his home forever or bring harm to his family. He takes some time to pack, and says good-bye, before swimming into a nearby lake.