When two women of a certain age discover that their husbands have been having an affair with each other for years, they do the only thing that makes sense — they move in together and start their second acts. There's just one catch: Grace (Jane Fonda) and Frankie (Lily Tomlin) aren't exactly best friends. In fact, they've only tolerated each other all of these years for their husbands' sakes. Still, the unlikely pair end up forming a bond that allows them to explore dating, entrepreneurship, and the power of female friendship in the most stunning beach house you've ever seen.