Squeezed by financial struggles, Marina and Airi boldly offer their bodies to their father, Kousuke, hoping to ease the family’s burdens. What begins as hesitant gratitude swiftly ignites into a torrent of forbidden passion and shared release. As their taboo encounters grow more intense, the line between familial duty and raw, desperate desire blurs completely, binding them in a complex web of aching need and sinful ecstasy.