Mei manages a hair salon while her husband is away on a long-term work assignment. Hatanaka, a married beauty-products sales rep, has long been attracted to her. Although they both know the other is married, conversations about their spouses gradually bring them closer. When Mei sees how unkempt his hair has become, she offers to cut it after closing. Alone together that night in the darkened salon, mutual desire and a few drinks push them across the line, leading to a torrid affair behind their spouses’ backs.