Arch n Company is about a compsagnathus(small dinosaur) named Archimedes and his roommates, a human named Watson and Rex a tyrannosaurs and pet vulture Ezra. Archimedes is highly mischievous, sarcastic and loves picking on his roommates and harassing the neighbors. Watson is a dim-witted bachelor who cannot seem to get a date and often humiliates himself in doing so. Archimedes has a girlfriend, a pteranodon named Victoria and they have a love/hate relationship with each other. Rex is a naive and unintelligent non-speaking T-rex who is often the victim for Archimedes and Ezra's pranks. Ezra is a vulture with a gluttonous appetite and often steals food from everyone.