Suryani, known as Sur, is a college student deeply immersed in her computer studies as well as an active member of her campus theater group, Mata Hari. Having created a website to enhance their visibility, Sur's efforts lead to an exciting invitation—the group's production of "Medusa" is slated to be showcased at a festival in Kyoto. This call for celebration at their leader Rama Soemarno's home, however, is met with caution. An older peer, Farah, warns Sur against attending, and her strict father emphasizes that he doesn't want her drinking. In defiance of their advice, Sur chooses to party.
The aftermath proves detrimental. Awakening the next day with a throbbing headache and scant memories of the prior night's events, Sur panics upon discovering that incriminating selfies of her inebriated state have surfaced online. The revelation is a double blow: a campus board meeting concludes with the revocation of her scholarship, and her furious father expels her from their family home, citing her irresponsible behavior of returning at 3 AM with a man.
Desperate for answers, Sur embarks on a quest for the truth by reaching out to the Mata Hari members. Anggun discloses that she had arranged a taxi for Sur around 10 PM, leading Sur to suspect she may have been drugged after a whiskey shot from Tariq. Now determined to investigate, she moves in with her friend Amin, who juggles running a photocopy service while engaging in illicit activities by selling theses to students. There, she leverages her tech skills, secretly tapping into the phones of her peers to extract pertinent information.
Seeking further clarity, Sur and Anggun approach a taxi service to clarify the excessive duration of her trip home. They learn from the driver, Burhan, that a flat tire caused the delay. Armed with this knowledge, Sur confronts her theater group using a series of photos and videos captured during the party that accuse Tariq of wrongdoing. However, upon reviewing video footage from Rama's vast collection, he is cleared of guilt, and the group presumes Sur must have self-posted the embarrassing images.
Not deterred, Sur conducts her own drinking test alongside Amin, only to find that she can handle far more than the four drinks she had, reaffirming her belief in foul play. Further investigation draws her to Rama's artistic installation, initially believed to show the Milky Way. Upon further inspection, Sur uncovers the chilling truth: those weren't cosmic images, but rather manipulated pictures of human skin blemishes, tapping into her own birthmarks as a hidden theme.
In a twist, Sur discovers Amin has been involved in illicitly acquiring students' private images for Rama, who claimed he needed them for "inspiration." Shocked and betrayed, Sur brings her findings before the college Ethics Board, but the fallout is devastating. Her evidence and identity go viral, leading Rama's lawyer to demand a public apology—coerced by external pressure, Sur concedes. Yet, her mother, Yati, eventually learns the truth through a familiar mark on her daughter's body and provides Sur safety with an acquaintance, Siti, versed in medical knowledge. Unfortunately, Siti informs Sur that it may be too late to prove any drugging.
To her astonishment, Farah and Tariq disclose their own traumatic experiences with Rama, revealing a shared history of being drugged and appearing in his art. The plot thickens as they discover the premeditated nature of Sur's taxi ride, leading them to suspect Burhan of ulterior motives.
In an effort to reclaim their narrative, Tariq plots an encounter with Burhan that exposes the latter’s physical limitations, corroborating their theory of him being complicit in a sinister scheme orchestrated by Rama. After knocking out Burhan and retrieving his phone, they uncover shocking footage of Rama abusing multiple victims, including Sur, Farah, and Tariq.
As tensions rise, a fierce confrontation ensues at Siti's place where Burhan temporarily recuperates. Rama, cloaked in deception and aided by fixers disguised as pest control workers, makes a brazen entrance, asserting dominance while symbolically comparing the victims to mythological monsters.
The following day, with resolve, Sur and Farah mobilize efforts to disseminate the crucial evidence from Amin's photocopier atop the campus roof. One by one, more victims come forward, bearing their own truths and evidence to share. In a climactic moment, anger leads Anggun to punch Rama as they collectively reclaim their identities through printed scans of their faces, transforming from silenced victims into empowered voices against the wrongdoings they endured.
