Two close friends, bored and looking for thrills, decide to spend the afternoon in a seedy motel. The 'amiga' is a wild one, known for her insatiable appetite, and she's brought her friend along to 'cabalga', Spanish slang for a wild ride. The room is dimly lit, the scent of old sex and cheap perfume lingering in the air. The 'loca' friend is eager, stripping off her clothes and mounting her friend, riding her hard and fast, their moans echoing off the thin walls. The 'amiga' is a willing participant, her body responding to every thrust, her breath coming in ragged gasps.