It really isn't so bad. As far as Wayans brothers come and go, Damon is one of the funniest. Believe it or not, there is actually a plot, and the film manages to blend convincing moments of tension and drama amidst occasional moments of hilarity.
Much to the chagrin of his partner in crime, Johnny (played by Damon) decides to try and go legit after falling for Amber, who he meets mid-scam. He lucks his way through an interview, lands a low paying job in the same building as her, and proceeds to pursue her. His old criminal instincts eventually get the best of him and he gets caught by the devious company head of security, who then proceeds to exploit him for his own self-serving purposes.
Realistic? Not really, but it's one of the more genuinely amusing films to come out of the "new jack swing" era, and way funnier than anything in the Scary Movie franchise.