Daryl Zero is a private investigator and—along with his assistant, Steve Arlo—he solves impossible crimes and puzzles. Although Daryl's a master investigator, he doesn't know what to do with himself when he's not working; he has no social skills, writes bad music and drives Steve crazy.

Ann, a cute video store clerk, calls a suicide hotline when her boyfriend breaks up with her. She speaks with Don, who volunteers there when he's not selling real estate for his dad. By chance, he finds out who Ann is.