Charlie Fisher discovers he can't die. After his accidental death during a barbecue incident involving lighter fluid, a spatula, and his neighbor's cat, Charlie wakes up at the exact moment he started his day. Each subsequent death—whether from choking on a bagel, being hit by an ice cream truck, or slipping on a banana peel in the most cliché way possible—results in him restarting his day. His increasingly outlandish attempts to explain his predicament to friends and family only land him in therapy or the local psychiatric facility.
Embracing his newfound immortality, Charlie decides to use his endless lives for increasingly ridiculous stunts: testing urban legends, confronting his high school bully, and winning the lottery by memorizing numbers. His best friend Mike, the only person who believes him (mostly because Charlie can predict every conversation they have), suggests they use this power for good. This backfires spectacularly when their attempt to stop a bank robbery ends with Charlie getting shot seventeen times and Mike learning that time only resets when Charlie dies.
As Charlie cycles through hundreds of lives, he begins to notice a pattern—his therapist seems suspiciously aware of his condition. After confronting her in a particularly dramatic death scene involving office supplies, she reveals she's part of a secret society of "Restarters" who have been living this way for centuries. They've been watching Charlie to see if he'd figure it out on his own. The catch? The only way to break the cycle is to live a perfect day where nobody dies—including all the people Charlie didn't even realize were dying around him every day. Now Charlie must transform from a selfish death-prone disaster into someone who actually saves lives, one ridiculous restart at a time.