At 42 Robin feels that life is slipping away from her. As her husband continues to refuse to have children she is filled with a deep regret that stretches beyond to her shortage of sexual partners and experiences before she married. Her answer...to draw up a contract with her husband for an open marriage that will last one year. Living in an apartment during the week where she's free to do what she wants with whom she wants and will return to her husband at the weekend. So begins a year of wild and weird sexual adventures taking in orgasmic meditation workshops and casual sex.