Amiga, a luscious blonde, finds herself in a tight spot with an aggressive loan shark. To pay off her debt, she offers her innocent sister as collateral. The agiota, a sleazy man with a lecherous grin, agrees. The sisters, loathing their situation, are forced to put on a show for him on the plush sofa. Amiga, the more experienced of the two, guides her sister's hands to caress her body, teaching her how to please a man. The agiota, hard as a rock, watches as the sisters' inhibitions melt away, their moans filling the room. He steps in, taking control, and the sisters eagerly comply, their bodies intertwined, as they pay off the debt with their hot, sweaty, sisterly love.