Wil Morgan was a dreamer who loved science and believed in magic until he was 10, when his mother - who shared those traits - died in a horrific accident. As an adult, he's a sad-sack private detective who spends his day in the same routine, going to and from work and barely getting by. When a mysteriously wacky client named Mr. Dinsdale stops by and offers him a job tracking down levity (the opposite of gravity), he discovers streets he's never heard of, items that defy physics, and an odd thrift shop managed by a gorgeous woman named Lucy who falls for Wil in spite of his shyness and lack of social skills.