Dean, an inventor, plans a special weekend getaway at a hotel to celebrate his anniversary with his girlfriend Lana.

On the day of their anniversary, Dean calls Lana and begs her to come back, hoping to fix their disastrous date.

As they attempt further time-travel intervention, more versions of Dean, Lana, and even Terry appear, each with varying knowledge of the events that have transpired.

The original Dean eventually realizes that each attempt to repair the weekend only makes things worse.

In a final attempt to set things right, he tries to destroy the machine, preventing any of the subsequent timelines from occurring.