History Film / HappyDeathDay2U

** [[spoiler:Stephanie Butler]] ends up murdered by the Babyface Killer. However, [[spoiler:she was his accomplice in Lori's murder and gleefully tried to kill Lori and Tree just beforehand]].

* AsLongAsItSoundsForeign: While pretending to be a French student to distract Dean Bronson Danielle throws in a 'gracias'.

* RealityEnsues: [[spoiler:Tree and her friends are forced to do community service for reactivating the reactor.]]

* DoubleEntendre: During his rant about shutting down the Sisi project, the Dean refers to another professor (presumably Ryan, Dre and Samar's supervisor) as 'Doctor Boner'. Ryan quietly corrects his pronunciation by replying "It's Bone-ay".

-->'''Carter:''': Are you kidding me? No, I'm sorry to throw a bag of dog shit on your front porch here, but this is all on you guys! You created this mess, so you're obligated to help her out of it! Besides, if she dies again tonight, that's blood on your hands.

* ReasonYouSuckSpeech: Alternate Carter blatently calls out his companions for trying to back out of stealing the reactor, due to them being responsible for creating it and the time loops in the first place.

* ReasonYouSuckSpeech: Alternate Carter blatently calls out the three scientists for trying to back out of stealing the reactor, due to them being responsible for creating it in the first place.

* AllThereInTheManual: it's not until the end credits that you find out that Ryan's lab-mate Dre doesn't have a celebrity-baby-style weird name: it's short for Andrea.

** in the first movie, Carter and Ryan's dorm room was covered in posters for classic sci-fi and horror movies. In the second, at one point it focuses on the wall directly above Carter's bed, and there's a poster for ''Franchise/BackToTheFuture'' (though you can't tell if it's for part one or two).[[note]] Film/BackToTheFuturePartII is directly referenced as an example of Tree's predicament with alternate universes.[[/note]]

* SuspiciouslyAproposMusic: Again the FailureMontage is scored by a pop song, and this time - Music/{{Paramore}}'s "Hard Times" - the lyrics are oddly very fitting ("All that I want\Is to wake up fine\Tell me that I'm alright\That I ain't gonna die...").

A third film, ''Happy Death Day To Us'', is currently in development.

* FiveSecondForeshadowing: when Tree storms into the Kappa house in her first day of the second loop, Danielle doesn't come out of the living room in her yoga gear. A few minutes later, she discovers there's no cupcake from Lori. It's what clues Ryan in that Tree's now in an alternate timeline.

After freeing herself from her birthday death loop, Tree Gelbman (Creator/JessicaRothe) is ready to get her life back to normal now that she’s with Carter (Israel Broussard). However, a school science experiment gone wrong and sends Tree back to Monday the 18th with a new killer on the loose, forcing her to once again relive her birthday, but with [[AlternateTimeline a few differences]].

!!''Happy Death Day 2U'' provides examples of,:

** To a lesser degree, Tree herself. When deciding whether or not to stay in the alternate universe, she never seems to consider what might have happened to her counterpart native to that universe, who's life she would be essentially stealing.

* YourCheatingHeart: [[spoiler:Lori is the one having the affair with Gregory in the alternate timeline. Additionally, Carter and Danielle are together, but Tree catches another guy coming out of her en suite shower.]] It's actually [[spoiler: Nick, the guy Danielle was crushing on in the first movie, who Tree 'stole' from her.]]

!!''Happy Death Day 2U'' provides examples of, ''Happy Death Day 2U'' provides examples of, ''Happy Death Day 2U'' provides examples of, ''Happy Death Day 2U'' provides examples of:

After freeing herself from her birthday death loop, Tree Gelbman (Creator/JessicaRothe) is ready to get her life back to normal now that she’s with Carter (Israel Broussard). However, a school science experiment gone wrong sends Tree back to Monday the 18th with a new killer on the loose, forcing her to once again relive her birthday, but with [[AlternateTimeline a few differences]].

After freeing herself from her birthday death loop, Tree Gelbman (Creator/JessicaRothe) is ready to get her life back to normal now that she’s with Carter (Israel Broussard). However, a school science experiment gone wrong sends Tree back to Monday the 18th with a new killer on the loose, forcing her to once again relive her birthday, but with a few differences.

* NeverTrustATrailer: The line "[the killer´] is coming for everyone"? Not true, Babyface still has a specific target, the only extra victims being those who either cross its path or witnesses.

* WhatTheHellHero: Carter delivers one to Tree [[spoiler:when he learns that she intends to stay in the alternate dimension, essentially robbing the other Tree of her life.]]

* WhatTheHellHero: Carter delivers one to Tree [[spoiler:when he learns that she intends to just return to her own timeline after the machine has been 'fixed', essentially leaving Lori and other potential victims to their fate]].

* CallBack: several to the first movie, some mixed with {{Irony}}

* CerebusSyndrome: While the comedy is still very present, this time Tree faces moral decisions that can get heart-wrenching. [[spoiler:Specially as her mother is still alive in the alternate timeline]].

* DeanBitterman: Dean Bronson is a complete asshole, but also becomes our heroes biggest obstacle in their attempts to undo the time loops.

* EvilCounterpart: [[spoiler:The original version of Gregory from 'our' Tree's universe was not a good person by any definition but the alternate universe version is an outright murderer.]] In contrast, the first film's killer [[spoiler:Lori Spengler]] actually is the good person they pretended to be in Tree's universe.

** The first time Tree enters the Kappa house in the alternate universe, she has Carter and Ryan in tow. Right before she confronts Lori about the (now non-existent) cupcake, Lori greets Carter by name. [[spoiler: Shortly afterward Tree finds out the hard way that Carter is dating Danielle. So of course Lori (who's a nice girl in this universe) would know the guy who's dating her sorority sister]]
** Inversion, further to the above: When Tree wakes up on the 18th (again!) she's so busy anticipating his lines that Carter never says "I don't know if you remember my name, you were pretty wasted". Tree just says "Pretty wasted?" [[spoiler: Since Carter's dating Danielle in this universe, of course the alternate Tree knows his name. If Tree had let Carter talk, he would have said something like "I don't know if you remember ''coming back here'', you were pretty wasted last night."]]
* FreezeFrameBonus: The white board in the Sisi lab includes an admonishment to "stop taking my food!"

* GenreSavvy: Tree basically has become this due to her last experience, and pretty much knows what to and what not to expect regarding the killer. Though it takes her a while to become this regarding the parallel universes and time loops.

* HoistByHisOwnPetard: [[spoiler: Gregory, who works on MRI machines all day, meets his demise through one as Tree magnetizes a screwdriver into him so that it fatally stabs him]].

* {{Irony}}: mixed with CallBack to the first movie:

** In the first movie, Danielle was crushing on Sigma Frat brother Nick[[note]]he's the 'welcome to the pleasure dome' guy[[/note]], who blew her off in favor of Tree (even after she punched him in the Babyface mask). By the end of it, Tree, [[CharacterDevelopment is no longer interested in anyone but Carter]]. In the second movie, Danielle is dating Carter [[spoiler: but cheating on him with Nick]].

* LimitedWardrobe: Lampshaded and defied. After a whole loop where she stays with the same Dumpstaphunk shirt given by Carter, Tree complains about using the same clothes over and over and asks where she could change herself.

** [[spoiler: Tree shoots John Tombs who was about to stab Lori with a knife]].
** [[spoiler: In the final battle, Tree only has a screwdriver while the Babyface Killer (Gregory) has a gun. Tree activates the MRI machine magnetizing the gun out of his grasp and trapping him with a wheelchair so he can't reach or use his gun while Tree aims the screwdriver at him]].
* NeverTrustATrailer: The line "[the killer´] is coming for everyone"? Not true, Babyface still has an specific target, only extra victims being those who either cross its path or witnesses.
* NoAccountingForTaste: A downplayed example in the relationship between the Alternate timeline Carter and Danielle: The Alternate Danielle pretends to be a nicer person than her prime timeline version (and may even be ''slightly'' nicer) and she is still beautiful... but even this relatively nicer version still comes across as a BrainlessBeauty who depends on Carter to do her coursework for her. Its a bit difficult to understand why he is dating her.
* NoodleIncident: right before Tree gets sent to the alternate universe, she's explaining the time-looping to Ryan, Dre, and Samar.

* NotMeThisTime: [[spoiler:Lori is not Babyface in this sequel like the last film.]]

* ScreamingAtSquick: Carter and Danielle do this during the suicide montage when Tree goes skydiving with no parachute and lands rights in front of them.

* YourCheatingHeart: [[spoiler:Lori is the one having the affair with Gregory in the alternate timeline. Additionally, Carter and Danielle are together, but Tree catches another guy coming out of her ensuite shower.]]
** It's actually [[spoiler: Nick, the guy Danielle was crushing on in the first movie, who Tree 'stole' from her.]]