Her husband is busy with work and can't find a partner for Mao. - Mao, a big-breasted gal wife, enjoys provoking her father-in-law, who lives with her, every day. - One day, Mao gets a call that her husband will be late for work, and she starts to move. - The father-in-law, who has taken advantage of the provocation, gets absorbed in Mao's body and seeks Mao's body every day. - As a result of continuing her relationship with two men, her husband and father-in-law, Mao's body finally changes... - What changes happened to Mao's body?