Jeong Da-eun

Jina (Gong Seung-yeon) is the top employee at a call center, but despite talking to customers all day, she has shut out the world beyond her headset; she lives alone, eats alone, sleeps alone, and her cell phone is her constant companion. When one day she's tasked with training a friendly and naive new hire (Jung Da-eun), her icy armor is threatened. At the same time, she must navigate an incessantly ingratiating new neighbor, and increasingly urgent...