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Episode 1

Episode number: 1

Overview: Years after building a unique AI chatbot, Kim Sum uses the technology to create Somebody, a dating app built to connect — and linked to multiple crimes.

Episode 2

Episode number: 2

Overview: Seong Yun-o makes a pitch at work, then makes a new app connection. Sum reaches out to Yun-o after their unusual encounter. Murderous activity escalates.

Episode 3

Episode number: 3

Overview: After Yeong Gi-eun experiences a nightmarish Somebody date, she and Lim Mok-won reach out to Sum to ask her for help in finding the man responsible.

Episode 4

Episode number: 4

Overview: After days of radio silence, Sum finally hears back from Yun-o. When Sum tries to meet another app connection, things quickly turn violent.

Episode 5

Episode number: 5

Overview: Sum and Yun-o take their relationship to the next level. Meanwhile, Gi-eun goes to the CEO of Spectrum to ask for access to her personal chat history.

Episode 6

Episode number: 6

Overview: Gi-eun confronts her catfish on Somebody, and soon finds herself in danger again. Mok-won performs a ceremony to ward off evil spirits for Sum.

Episode 7

Episode number: 7

Overview: Mok-won and Gi-eun need to blow off some steam, so they take Sum along to a night club. Later, Mok-won tries to get Sum to face the truth about Yun-o.

Episode 8

Episode number: 8

Overview: With the walls closing in and threats escalating, Yun-o begins receiving deeply disturbing video chat requests on Somebody.