SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
How It Ends Plot Summary and Synopsis
In this feel good apocalyptic comedy, freewheeling Liza (Zoe Lister-Jones) scores an invite to one last wild party before the world ends. But making it there won’t be easy, after her car is stolen, and the clock is ticking on her plan to tie up loose ends with friends and family. Accompanied by her younger self (Cailee Spaeny), Liza embarks on a hilarious journey across Los Angeles, running into an eclectic cast of characters.
Source: Wikipedia (CC BY-SA 3.0).