The film's protagonists, Annaand Willare a long-term couple who are first lovers, first kisses and firsts for each other. Their relationship is strong but lacks passion.
At Anna's 30th birthday party, Will is about to propose, but is interrupted by their drunken friend who advises them not to rush to get married and settle down, but to go outside to see other "scenery". The speaker had no intention, but the listener had a heart. Anna was really moved, so she discussed with Will to start an "experiment": that is, under the framework of monogamy, free sexual relationship with other people.
