Justin Bieber stops by the factory and Rob's best friend, Christopher "Big Black" Boykin ("Rob and Big") returns in this Season 4 opener. Also Rob gets chased by a 400-lb. tiger.

When Rob discovers that Drama is planning to get a full mouth of veneers, he enlists the help of Big Black to prepare Drama for a modeling photo shoot in the factory. Rob is also invited to race professional Torc Truck driver Casey Currie.

Rob decides to form a "death metal kill pop" band called The Bleeding Frogs with Chanel, Drama, Big Black and two traveling musicians.