The storyline would revolve around him needing a roommate and then his roommate being invasive and eventually finding out that the roommate killed some people on purpose a few years back and... He's going to need a new roommate. One per season.
It's the quirky 80s comedy spinoff where the lovable goofball Dexter just can't keep a roommate, and his friends don't get why since he's just so darn swell.