Normally, they maintain an ordinary mother-son relationship, but the mother enjoys drinking and often spends her days off from her part-time job leisurely enjoying evening drinks. However, under the influence of alcohol, she frequently loses control and, when drunk, becomes uninhibited, physically clinging to anyone without hesitation. One day, seeing her slightly intoxicated and unexpectedly seductive, the son—also lightly drunk—begins to feel emotions unlike anything before. A strange, underlying tension lurking within their daily life starts to shake the foundation of their familial bond.