Mahiro, a young married woman, turns into a kissing fiend whenever she gets drunk, so she usually avoids alcohol. She always skips neighborhood drinking parties, but decides to attend the year-end party. Though she initially refuses drinks, she gives in after strong pressure from the town mayor and quickly transforms into her aggressive, lustful self. Drawn to a young, energetic man with a strong erection, she secretly approaches him repeatedly, hiding it from her husband and mom friends. Her passion and intensity end up completely changing her everyday life.