Twenty-year-old Leeza Keats is late for her first real work assignment. If misses her train in 20 minutes, she’ll lose her job and money for college. She hails a vintage cab that steams, emits the scent of barbeque, and whisks her crosstown in 20 seconds. The top-hatted driver then takes Leeza 40 years forward in time where, separately, she meets three elder versions of herself. Each urges her to save loved ones and humanity by changing the timeline. Leeza realizes that thei conflicting plans mean at least one of them is lying to her.