Kim Il-Kwon, burdened by a strong sense of responsibility, fears childbirth as age takes a toll on him.
Go Kyung-Hoon, crushed by life's challenges, lacks motivation, and can't even pursue relationships.
Hwang Ah-Young, who was once passionate and full of hopes and dreams, now feels indifferent toward everything.
One day, they get to alpha-test their company's new product. But little did they know, it was an eerily human-like android. The 30-day alpha test begins, and the interactions with the android get intriguingly real...