Before we explain the end of this movie, we need to establish how everything works first. Michelle Yeoh’s Evelyn is able to travel through the multiverse thanks to a process called “verse-jumping.” Her counterpart from the Alphaverse created this technology so that people in her universe could tap into the skills, memories, and bodies of their parallel selves. It’s triggered by random acts like eating lip balm, snorting a fly, or leaping onto a butt-plug-shaped trophy. The more random the act, the more power is created to jump to abilities located in further universes.

The Alphaverse version of her husband Waymond, who is played by the incomparable “Indiana Jones and the Temple of Doom” and “The Goonies” star Ke Huy Quan, introduces our protagonist Evelyn to the tech after his team searched far and wide throughout the multiverse to find the version of her that could mentally handle the strains that verse-jumping puts on someone’s brain, which are similar to the cracks that form on an overfilled clay pot.

Since this Evelyn is basically (in Alpha Waymond’s words) living her worst life, she is capable of anything because she’s so bad at everything. We get a glimpse into this when Jamie Lee Curtis’ IRS auditor Deirdre questions a number of expenses such as a karaoke machine and watsu massage paraphernalia and asks what they have to do with running a laundromat. Waymond responds by saying that Evelyn mistakes her hobbies for potential careers. It’s the age old adage “Jack of all trades, master of none” brought to life.

But because this Evelyn is not beholden to one path in her life and possesses a plethora of untapped potential, she is somehow more susceptible to whatever mental capacity is necessary for verse-jumping, and can utilize the expanded lung capacity of the version of herself that’s a singer, the martial arts stylings of her famous action movie star self, or whatever it is she needs from her counterpart from a world where humans evolved with long, limp, hot dog-like fingers, to defeat the all-powerful threat consuming the multiverse.