Episode 9 of "True Beauty" kicks off with Jugyeong sprinting after Sua, their destination a classroom where they, along with Chaerin, intend to confront Sujin. As they arrive, two of Sujin's cronies confront Sua, Chaerin, and Jugyeong, bringing up the previous challenge from the Sebom Goddess Competition. Sua revelations stun everyone: Sujin had appropriated Jugyeong's outfit for that particular mission.
Sujin's entrance only escalates the tension as she denies copying Jugyeong's attire. Sensing that Sua is about to stir up more trouble, Jugyeong takes her aside for a private chat. Despite Jugyeong's intervention, Sua continues her rant, insisting that Sujin had indeed stolen Jugyeong's outfit. She then urges Chaerin and Jugyeong to visit her later to devise a strategy, suggesting they could turn the meeting into a cozy pajama party. Jugyeong hesitates, anxious about revealing her true self without makeup to Sua and Chaerin.
Later, Jugyeong reconsiders her initial refusal. After an accidental encounter with Seojun, she reaches out to Suho, asking him to meet her at the park. Seeking advice, Jugyeong ponders how to confess the truth about her appearance to Sua and Chaerin. Suho reassures her that their friendship transcends her appearance, using his own bond with Jugyeong as proof. Encouraged, Jugyeong sends Sua a message, reversing her decision and agreeing to join the pajama party.
Upon her arrival, Sua playfully scatters pajamas across the floor. Chaerin and Sua then pepper Jugyeong with questions about her relationship with Suho. Persuaded by their curiosity, Jugyeong agrees to call both Suho and Seojun, the room buzzing with anticipation.
They eagerly seek confirmation on whether the boys harbor deeper sentiments for Jugyeong. Sua, seizing Jugyeong's phone, swiftly sends a message to Suho, demanding his presence at her home; failure to comply would result in Jugyeong severing their friendship. Soon, Seojun and Suho arrive, with the latter sensing an underlying tension and attempting an early exit, only to be persuaded by Sua to stay. Both Seojun and Suho don animal-themed pajamas, setting the stage for Sua to snap several photographs, capturing Jugyeong, Chaerin, and herself in the moment.
As the evening progresses, Sua insists on playing the truthful game of chance, spinning the bottle that eventually points to Suho. He admits his preference for individuals who are genuine and truthful. Seojun, following suit, reveals his fondness for cute people, sparking a playful debate with Sua, who declares her liking for handsome individuals. Sua then shifts the focus, and the bottle lands on Seojun, prompting her to inquire if he harbors romantic feelings for someone. Seojun confirms the existence of such feelings but remains tight-lipped about the identity of his crush. With another twist of the bottle, the rules change, demanding a secret hidden from all to be unveiled. This time, the bottle selects Jugyeong.
Noticing the growing tension, Suho seizes an opportunity to leave Sua's place with Seojun. Left alone, Sua and Chaerin speculate about Jugyeong being entangled in a love triangle. Jugyeong confronts the girls about her concealed secret, asking for their patience. She returns to the living room, baring her "ugly" side to Sua and Chaerin, apologizing for keeping this part of herself hidden. Moved to tears, Sua and Chaerin assure Jugyeong that they cherish her for who she is, not just for her appearance. The three girls share an emotional embrace.
Elsewhere, Sujin scrolls through her phone, noticing a buzz around the recent mission. Some speculate that Sujin might have stolen Jugyeong's original attire, while others highlight Jugyeong's surging popularity in the competition. Sujin ponders what makes Jugyeong so exceptional. Suddenly, a video clip of Jugyeong being bullied pops up on her screen, leaving Sujin with a sinister smile as the episode concludes.