For Josh Harper, being in show-business means everything he ever wanted - money, fame, a beautiful wife, and a lead role on the London stage. For Stephen C. McQueen, it means a disastrous career playing passers-by and dead people. Stephen is stuck with an unfortunate name, a hopeless agent, a daughter he barely knows, and a job as understudy to Josh Harper, the 12th Sexiest Man in the World. And when Stephen falls in love with Josh`s clever, funny wife Nora, things get even more difficult. But might there yet be a way for Stephen to get his Big Break? THE UNDERSTUDY is a scintillating comedy of ambition, celebrity, jealousy and love.