One woman's life is forever changed by an engagement ring meant for someone else.
Just three weeks before her wedding, Lola (Greta Gerwig) finds herself suddenly without a partner when her longtime fiance, Luke (Joel Kinnaman), dumps her. With her 30th birthday looming and being forced to re-enter the New York City dating scene, she feels adrift in a cold world. She leans on her friends (Zoe Lister-Jones, Hamish Linklater) for support but, after a series of romantic humiliations, professional blunders and boozy antics, Lola realizes that she alone is in charge of her fate.
Liza scores an invite to one last wild party before the world ends. But making it there won't be easy, as her car has been stolen, and the clock is ticking on her plan to tie up loose ends with friends and family. Accompanied by her younger self, Liza embarks on a hilarious journey across Los Angeles, running into an eclectic cast of characters.
