In a small city where redevelopment has stalled, three high school friends struggle with their own obsessions: Yong-gi, a self-styled "attention seeker" dreaming of becoming a superhero; Ji-sook, a "pro-ana" obsessed with losing her weight; and Dumbo, a "netkama" who scams money online by pretending to be a girl. Their fragile friendship unravels when Woo-joo, a charming transfer student and an influencer, shows up. Ji-sook falls for him instantly, while Yong-gi, who has been secretly in love with her, can only watch. But when Woo-joo's real self is revealed Ji-sook starts to collapse, Yong-gi's hidden feelings turn into a dangerous plan for revenge.

After losing her laundry store to a fire incident, a single mom Duk-hee receives a call from a bank offering a generous upfront loan so she takes it right away. But soon after, she finds out that she has become a victim of a voice phishing scheme. Devastated, Duk-hee turns to the police for help, only to be more disappointed that there is no hope of retrieving her money. At the moment of despair, Jae-min, the phisher who tricked her, rings her phone once again to tip Duk-hee off about the criminal organization that locked him up and coerced him to make voice phishing calls from China. With that call, Duk-hee makes up her mind to investigate this case for herself and take a plane to China with her friends.

Yunjeong is in trouble because her younger brother lost the deposit money through multi-level marketing.