Xiang Xia, a high school student, becomes thrilled when her idol, the big star Jin Han, transfers to her class.
Overwhelmed by excitement, Xiang Xia constantly talks to her idol, Jin Han, who reluctantly warns her to stop. Jin Han's popularity empties the cafeteria's fried sauce noodles in seconds.
After Xiang Xia accidentally tackles Jin Han, she apologizes humbly for past incidents, hoping for his forgiveness. During a math exam, Jin Han's actions result in Xiang Xia and Yu Shengjie being accused of cheating and kicked out.
Xiang Xia excitedly brings water to Jin Han's house but gets kicked out for being too chatty. After a supermarket encounter, where she follows Jin Han around, Xiang Xia helps him carry groceries home.
Hearing Xiang Xia's excited cheers, Jin Han feels happy and thanks her with a hearty breakfast. During an ad shoot, the director makes Jin Han drink excessive coffee, causing him to vomit, which Luo Lila mocks.
After sharing a steak dinner with her idol Jin Han, Xiang Xia feels dejected when he jokingly calls her dumb while playing Sudoku.
To encourage mutual assistance, the top and bottom students are paired as desk mates. Second to last Xiang Xia decides to tutor last placed Yu Shengjie to secure her position next to Jin Han.
Yu Shengjie becomes a discipline officer after Jin Han recommends him to the principal, showcasing Yu's past misconducts. Yu's authority is challenged by Luo Lila's group, and complaints lead to his reprimand.
Xiang Xia guards Jin Han's home from the stalker, wielding her mother's frying pan, but has to leave. The next night, they catch the stalker together. Jin Han tends to Xia's injury, advising her against risking herself for an idol.
Jin Han fixes Xia's rocket model, inspiring her to study aerospace. Despite being ousted from English class, she persists outside with aerospace books.
Distracted by Jin Han's merchandise, Xiang Xia struggles to study. Jin offers the merchandise as rewards for correct answers, but Xia fails to earn any.
Yu Shengjie fantasizes about a romantic birthday with Xiang Xia but ends up with a group celebration instead. Despite the initial disappointment, he finds joy in the company.
Jiang Cheng provokes Jin Han on set, receiving anti-aging masks as a retort. Yu Shengjie, mistaken for a fan, lures Xia to his place under false pretenses, leading to a fallout.
Yu Shengjie moves into Jin Han's house, causing trouble and demanding extra spices in a barbecue meant for Xiang Xia, ruining its taste.
The group visits an arcade, with Yu Shengjie and Luo Lila competing in dance and basketball games, where Yu impressively breaks his record. Jin Han wins a toy for Xiang Xia, frustrating Yu.
To cheer up Yu Shengjie, Xiang Xia and Jin Han prepare a cake, gifts, and barbecue, sharing embarrassing stories.
Class 7 risks punishment for their teacher, Chen, due to poor grades. A diary revealing Chen's true thoughts accidentally gets exposed to the class, showing a softer side of her.
Xiang Xia's efforts to impress by carrying water extinguish any sparks of affection from Jin Han and Yu Shengjie. Dinner at Xia's reveals Jin's flattery skills, surprising Xia and Yu.
Xiang Xia wishes to revisit childhood memories with Jin Han but is disappointed when their old kindergarten is under renovation.
Yu Shengjie discovers a childhood photo of them in a coffee shop and mistakenly thinks the chubby kid in the photo is Jin Han, but it turns out to be the current goddess Luo Lila.
As Jin Han is about to watch a movie with Xiang Xia, Shark summons him for an interview, leaving Yu Shengjie to enjoy the movie with Xia instead.
In a blindfolded basketball challenge, Jin Han overcomes an initial disadvantage by adjusting his technique, eventually defeating Yu Shengjie. A frustrated Yu accidentally injures Jin.
Xiang Xia worries about Jin Han co-starring with Wu Shiya, whom he once criticized online. Attempting a prank with bird droppings on a stool, Xia ends up sitting on it herself to spare Jin from embarrassment, amusing him.
Cao Yuan confesses to posting online but denies accusing Luo Lila of plastic surgery. Luo decides to move on, regaining her confidence. Sun Xin worries about Luo's post-class tears and discovers her repeating a phrase to a statue.
After winning a crucial race, Xiang Xia falls at the finish line but is quickly helped by Jin Han, who tells her she finished first, exciting both her and the observing teacher, Chen.
Thanks to their hard work, Class 7 avoids last place, and Teacher Chen returns as their head teacher. Xiang Xia feels challenged when Jiang Cheng lands a major role, surpassing Jin Han's popularity.
Yu Shengjie and Jin Han join Xiang Xia's gymnastics class, overriding Jiang Cheng's objections. Amidst the training, playful conflicts arise, leading to a lively scene. However, Jin Han suddenly collapses due to a heart condition, prompting Jiang Cheng to carry him to the hospital while distracting paparazzi. Jin Han's mother unfairly blames Xia and others without understanding the situation.
To see Jin Han, Yu Shengjie leads a group of girls in disguising themselves as doctors, but they're stopped by bodyguards. A second plan allows Xia to sneak into Jin Han's room, touching him deeply.
After his mother smashes a model, Jin Han picks it up without a word and returns to his hospital room. The school feels lifeless without Jin Han, especially for Xiang Xia. Yu Shengjie quickly grabs a sports recruitment form for himself and one for Xia. After Xia submits her application, she reflects on her teacher's advice about confidence and consequences.
The tutor admires Yu Shengjie's ambition and agrees to tutor him. Learning Jin Han aims for an aerospace engineering degree at Huaqing University, Xia decides to try for a sports university and gives Jin Han a star lamp, earning a promise to be his unique deskmate fan. A welcome party for Jin Han boosts his morale. Class 7 students double down on their studies and training.