Ainsley and Peter Greenburg, a couple with three children, find their marriage stagnant and devoid of passion.

In a desperate attempt to rekindle their relationship, Ainsley proposes an open marriage, suggesting they see other people on specific days. They establish strict rules to prevent emotional entanglements, hoping this arrangement will reignite their connection.

Despite their mutual agreement, both harbor doubts and fears about the potential consequences of their decision.