At 31 years old, salesman Eliott Martin attempts to sell his first email address on a website. Due to a computer glitch, he begins to communicate with an 11-year-old boy and quickly realises that it is himself from 20 years ago.

By preventing Olivia's accident in the past, Eliott not only changed his sister's life but also his own. He is now the despised owner of multiple appliance stores and asks his past self to change the course of things once again.

In 2001, Eliott is worried about his parents, whose relationship is on the rocks, and consults psychiatrist Dr Sax. In 2022, Emilie chooses her wedding dress with her mother and confides that she thinks a lot about her boss.

After spending the night with Emilie, Eliott receives a visit from Olivia. His sister is angry with him because Camille was arrested. Eliott asks her to give him 24 hours to fix everything, and contacts his younger self in 2001.

Following the death of young Eliott's father in 2001, Sax inserts himself into the Martin family's life, and the child seeks refuge in food. In 2022, Eliott is obese and must prevent this alternative life from happening.

In 2001, Eliott is determined to avenge his father's death. In 2022, Eliott is trapped in a nightmarish reality because of Dr Sax. The two Eliotts, 20 years apart, must do everything to stop the psychiatrist.