Yuki, the wife of artist Asai Kaichi, is a model who supports him. One day, while she is doing a nude modeling, she is seen by the gardener, Sanada... Sanada cannot take his eyes off the indescribable charm that her naked body exudes. Sensing something about the two of them, Kaichi decides to leave them alone. Unable to suppress his lust for Yuki, Sanada can't help but push her down. Seeing his wife in such a lewd state, which he has never seen before, he feels jealousy and regret for being cuckolded. But an even greater excitement pierces her heart...