Episode list

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.

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.

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.

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

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.

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.

Mok Won and Gi Eun need to blow off some steam, so they take Sum along to a nightclub. Later, Mok Won tries to get Sum to face the truth about Yun O.

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