Kanna leaves the children with her parents and takes a hot-spring trip alone with her husband. At the inn, they meet two muscular Black men visiting Japan for a bodybuilding competition. Their incredible physiques make her husband look almost boyish by comparison. Later, while Kanna soaks alone in the outdoor bath, one of the men mistakenly walks in. She nervously tries to explain in broken English, but the towel around his waist slips off. The sight of his powerful body and enormous cock makes her ache with desire...