Taichi, though young, remarried the alluring Reiko, building what appeared to be a happy family. However, beneath the calm surface of their household lurked a dark undercurrent. Reiko, the stepmother, tried to suppress her growing attraction toward her stepson, burdened by guilt toward her husband Taichi. But the son, finding thrill in her resistance, grew bolder each day. Under the guise of family bonds, their twisted relationship deepened.