Je-na is a young lady with a dreamy life, she lacks nothing in life. That day, Je-na is choosing luxurious shoes in the inclusive area of the store. Here, Je-na encounters her father's lover and argues with her. She scolds this woman for having a relationship with a married man.

The woman tells Je-na that she doesn't care about money, she just wants to be with Mr. Baek because she loves him. Je-na mocks her as a hypocrite because she is shopping at an upscale store with Jenna's father's money.

She leaves the store with her manager. The woman asks Je-na to answer her father's call, but Je-na ignores it and goes to the restroom alone. In the restroom, Je-na cries because she is sad. She goes out to wash her hands and is accused of stealing shoes by Hye-in.

Hye-in pulls Je-na's hair and forces her to return the shoes, the two fight and Hye-in pushes Je-na down and takes off her shoes.

Meanwhile, Do-eon at his home takes Hye-in's contact information from his father's safe. Hae-seo almost catches Do-eon but he makes an excuse to just get a book to read.

So-mang goes to a nightclub with a beaten face, he is beaten by his father who is a pastor after causing a scene outside.

Hye-in returns home that night with her luxurious shoes in a plastic bag while Je-na returns home barefoot. The next day, Hye-in appears at Cheongdam International High School wearing her luxurious shoes and looks around the luxurious international school and wonders how she will fit in here.

Meanwhile, Je-na's friends Yul Hee and Woo Jin are kissing in a special room when Je-na appears with a medical tape on her face.

She is angry about Hye-in and demands her minions to find the girl wearing the luxurious shoes. On the same day, So-mang is tasked with showing Hye-in around the school but Do-eon intervenes and leads Hye-in to the garden. The entire school is shocked when the director's son and the pastor's son fight over a girl. Outside, Do-eon asks Hye-in for her mobile phone number and requests her to contact him if she encounters any trouble.

From his social media account, Hye-in realizes that Do-eon already has a girlfriend. Hye-in bumps into a girl and drops her phone.

When she reaches her locker, Hae-in finds the shoes she bought inside, along with a box and a bag. A letter inside the locker reads "Welcome to Hell."

Hae-in finally realizes that the shoes she is wearing, for which she fought with Je-na, are not the ones she bought, and the person who stole her shoes in the restroom is someone else from the school.

Hye-in decides to go on with her day anyway, but as soon as she enters the classroom, her classmates gang up on her, following Jena's orders.

Hye-in runs away from them, but the whole school chases after her.

Hye-in runs into Hee-seo's office to demand that he take responsibility for protecting her, but Hee-seo tells Hye-in that it was her choice to come to the school and he can revoke her admission.

A flashback scene shows the assistant telling Hee-seo that it seems like Hye-in doesn't know who pushed Hae-in off the roof, so she also doesn't have leverage over them.

In the present, Hye-in complains that Hee-seo doesn't empathize with her and take care of her like his student. Hee-seo tells Hye-in that she has two choices - either she can endure the bullying happening to her or leave the school. Hye-in sneaks out of the school building but encounters Je-na. At that moment, the whole school rushes towards Hye-in and is ready to deal with her when Jena gives the order.

Je-na grabs Hye-in by the collar and tells her that she has made herself a target for the whole school by causing trouble with Jena.

Hye-in remembers seeing "Baek Je-na" online being dubbed as the most powerful teenager in South Korea, and now she realizes she made a big mistake. However, surprisingly, Hye-in forcefully pushes her head into Je-na, causing her to step back and giving Hye-in a chance to run away while Je-na bleeds profusely, with other students chasing after Hye-in.