A bi-sexual fantasy unfolds as a mistress trains her new sissy slave in the fine art of cock-sucking. The sissy, bound and gagged, is first made to pleasure his mistress's strap-on, learning to tease and tantalize with his tongue. Then, a real cock is introduced, and the sissy is forced to take it deep, gagging and choking as he learns the pleasure of servitude. The mistress's cruel words and harsh punishments push the sissy's limits, but the sissy craves more, eager to please his mistress and become the ultimate cock-sucking slave.