Nanami Hirose's happy married life is suddenly disrupted when her college friend, Ayaka, mysteriously disappears near graduation. In truth, Ayaka had been forced into a hellish existence, burdened with her deceased parents' debts. After barely escaping, she witnesses Nanami and her husband living a blissful life, igniting overwhelming jealousy and hatred within her. Determined to make Nanami suffer the same torment she endured, Ayaka begins plotting her revenge. A heart-wrenching story unfolds as her sinister scheme takes shape.