It focuses on aging Al Lewis and Willy Clark, a one-time vaudevillian team known as "Lewis and Clark" who, over the course of forty-odd years, not only grew to hate each other but never spoke to each other off-stage throughout the final year of their act. Clark, who was not ready for retirement, resented Lewis for breaking up the act when he opted to leave show business. It is now 1972 and ABC is inviting the team to reunite for a special on the history of comedy, with the pair representing the vaudeville era at its best. Clark is convinced by his nephew Ben to revive one of the old routines one last time. Much of the humor is derived from efforts to get the two cantankerous actors into the same room for a rehearsal, their differences of opinion once they reunite, and their shenanigans on the actual broadcast.