This article contains mentions of suicidal ideation.
Spoilers for Netflix’s It’s What’s Inside are ahead!
An influential plot point in Netflix’sIt’s What’s Insideis the college party eight years before the movie’s events that traumatized Beatrice and led her to seek revenge on the other attendees. When the eight college friends come together the night before Reuben’s party, there’s a lingering feeling of unease due to a fight that broke out at a college party eight years earlier. Every person in the horror-comedy movie seems to have a different recollection of the events, which plays into the movie’s overall theme about the factors that can impact perception.
While it’s initially presented as gossip, it becomes important to have at least a baseline understanding of the birthday party events when it’s revealed that Beatrice was inside Forbes' body the whole time.All the body swaps inIt’s What’s Insideplayed into her ultimate plan. Still, the exact timeline, the aftermath, and Beatrice’s actions may be confusing to some viewers because they are presented in so many different ways.

Beatrice Ended Up In A Mental Health Facility After The College Party In It’s What’s Inside
The College Birthday Party Negatively Impacted Beatrice
The fact that theIt’s What’s Insidecharacterstell a different version of the story makes it difficult to know precisely what happened the night of the college party; however, it’s possible to guess by combining the different iterations. Forbes and Dennis confirm that the latter was hooking up with Beatrice before the party and possibly making promises about their future together. When a group of college friends threw a birthday party for Dennis, Forbes brought his sister. She got drunk either from Forbes or Dennis. After hooking up with Dennis again, she told everyone they were in a relationship.
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Rather than admitting to their relationship, he started gaslighting her and telling everyone that she was crazy.Others joined in, destabilizing her mental state. Beatrice attacked Nikki, causing Dennis and Forbes to get into a fistfight. After the police were called, Dennis was escorted out, Forbes was expelled, and Beatrice was placed in a mental health facility. It’s unclear whether she went willingly or was held there under involuntary commitment. In either case, they put her on suicide watch because she was deemed a danger to herself.

Suicide is never the answer, and there’s help available! If you or someone you love is experiencing suicidal ideation, please call 988 or go toTheHotline.org(US) orFindAHelpline.com(international).
Why Beatrice Switched Bodies With Forbes & Stole The Suitcase
Beatrice Developed A Revenge Plot That Came To Fruition In It’s What’s Inside
After getting out of the psychiatric facility, Beatrice became stuck in her anger, unable to move forward from the traumatic experience of getting gaslit and hospitalized. Forbes showed her the body-swapping technology to bond with her, but she immediately devised a revenge plot. She stole Forbes’ body, knowing that he was invited to the pre-wedding party at Reuben’s mansion.She could go there, pretending to be Forbes, to take revenge on everyone involved in the college party incident.
Of all the individuals at the party, Dennis was the obvious primary target since he was the one to make promises, cheat, and then call her crazy. However, she also went after Nikki, who was taking Dennis when he was cheating with Beatrice. She seemed to have it out for Reuben, too, after finding out his involvement in the aftermath.

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It’s unclear whether she had any negative feelings towards Brooke and Maya, who were both at the party. Based on the fact that she left Maya in the body she wanted, it seems like there wasn’t malice towards her. The choice could also have come from the fact that there weren’t many other options, though. If all seven of the others survived the night, Beatrice would have more options that could make everyone unhappy. It seems impossible that she planned for Reuben, in Dennis' body, and Brooke, in Maya’s body, to die because of an unstable railing.

How Beatrice Gets What She Wanted At The End Of It’s What’s Inside
Nikki Punished Everyone Involved In The Events Of The College Party
By theend ofIt’s What’s Inside, Beatrice gets precisely what she wants, punishing every person who hurt her. In round 1 of the body swaps, Beatrice took Dennis’ body so that she could steal all his money. Because she took Forbes’ body, it seems that she wanted him to take the blame for the theft. This would get back at him for introducing her to Dennis and taking her to the party. Ultimately, he’s still stuck in the wrong body, which is a punishment in and of itself.
Beatrice takes Nikki’s body, the suitcase, and all of Dennis’ money – leaving her conventionally attractive, powerful, and rich.
She places Nikki in Reuben’s body, forcing her to either marry someone she doesn’t love or deal with the fallout. Reuben is either dead or stuck in a dead body, depending on whether Beatrice was truthful abouthow death works inIt’s What’s Inside. Maya and Shelby get out of it unscathed because they weren’t involved in the college birthday party incident. Meanwhile, Beatrice takes Nikki’s body, the suitcase, and all of Dennis’ money – leaving her conventionally attractive, powerful, and rich. This leaves her with very few limitations when moving forward afterIt’s What’s Inside.