One promise. Best friends Eleanor and Fin are inseparable. They are convinced that it will always be this way. But to be sure, they make a pact to keep their lives intertwined. And of course, they'll get married if they're both 35 and single. Two decades. Eleanor and Fin haven't spoken in fifteen years. They live on different continents, but more than an ocean separates them. Everything has changed since the last time they met. Can they still keep their word? So, when newly single Fin reappears, there's no way they can keep their promise. Is there?