Tree experiences her birthday repeatedly, reliving the day of her murder multiple times.
Using the knowledge from previous loops, Tree and Carter work together to identify the murderer.
Tree activates a device that creates a slight change in reality, introducing a parallel universe version of events.
Tree finds herself in an alternate reality where many things in her life are different.
Tree interacts with the altered reality versions of those close to her, learning about the consequences of timeline alteration.
Tree realizes that tweaks in the timeline have put Carter's life at risk, adding urgency to her actions.
Tree works with Carter and others to fix the timeline and prevent further harm.
Tree faces off against the killer in the changed reality to stop the cycle and save lives.
Tree succeeds in repairing the timeline, resulting in a stable reality with altered but positive outcomes.
