How does the form and style of sex between couples change as their marriage grows longer? To answer this question, cameras were secretly placed in the bedrooms of ten married couples, capturing real, unfiltered footage of their intimate lives. In their 15th year of marriage, a premature, sex-driven husband appears. In their 12th year, a husband who enjoys sex anywhere, regardless of location. In their 4th year, a husband who ejaculates within three minutes. In their 10th year, a couple separated due to the husband's infidelity reunite for sex after a long hiatus. In their 5th year, a husband with a fetish for buttocks engages in perverted sex. In their 3rd year, a husband eager to have sex even with a baby sleeping beside them. Also included are sweet, affectionate love-making scenes from couples still deeply in love. Real sex scenes from each couple are presented in raw detail.