Happy Death Day 2U

College student Ryan Phan begins his day with an unexpected reunion in his dorm room with his roommate Carter Davis and girlfriend Tree Gelbman. This seemingly normal day sets off a series of dramatic events that will challenge their realities.

Ryan, along with his fellow students Samar Ghosh and Dre Morgan, embarks on an ambitious project aimed at creating a quantum reactor. Their goal is to manipulate the flow of time, a concept that captures their youthful inventive spirit.

The progress on the quantum reactor project is abruptly halted when Dean Roger Bronson shuts it down. His concerns over a series of troubling power outages and the potential lack of tangible benefits cast a shadow over the team's ambitions.

Tragedy strikes when Ryan is murdered by a masked assailant known as Babyface. This shocking event sends him back to the start of the day, leading him to relive the same day again.

Tree reveals to Ryan that she too has experienced a time loop, having relived the previous day, September 18. Together, they set out to uncover the mystery behind the looping fate that binds them both.

In their investigation, Ryan and Tree discover that their experimental reactor is the source of a temporal glitch. This revelation adds urgency to their quest and deepens the complexity of their predicament.

As they navigate the dangerous loop, Tree uncovers the shocking truth that an alternate version of Ryan is behind the attacks. This revelation heightens the tension as the alternate warns Ryan that he must die to break the cycle.

In a desperate effort to escape the loop, Ryan activates the quantum reactor, unleashing a powerful energy pulse. The fallout sends everyone reeling, testing their resolve and commitment to each other.

After a revival in Carter's room on September 18, Tree realizes she has entered an altered reality where Carter has begun dating someone else. This new dynamic forces Tree to confront her true feelings and the loss of her previous relationships.

As night falls, Tree faces off against the killer, John Tombs, while racing to prevent his escape from the hospital. Despite having allies, the danger mounts as friends are put in jeopardy during the chaos.

In a pivotal moment, Tree must confront the reality of her looping fate and the sacrifices she has made. Her journey forces her to question her choices, ultimately leading her to a brave decision to confront the killer.

Amidst the turmoil, Tree wrestles with whether to pursue a life that isn't truly hers or close the loop to seek redemption. This moment reflects her profound emotional journey as she contemplates what truly matters.

The climax intensifies when Tree faces off against her adversaries in a series of harrowing encounters. Each moment pushes her to the brink as she fights for her life and those whom she cares about, culminating in a showdown with Tombs.

In the aftermath, Tree is transported back to September 19, this time with newfound knowledge and strength. Her journey reshapes her outlook on life and relationships as she navigates her return to reality.

The story culminates with Tree, Carter, Ryan, and their friends taken to a DARPA lab for further testing of the quantum reactor. Tree's determination to understand her fate leads to a powerful decision that will impact her future.