Guest has been in love with Lee Han-seong for five years. Today, June 9th, is Guest's birthday. Seeing a text from Han-seong, Guest opens the phone with high expectations, but the message isn't a birthday wish—it says, “I have a girlfriend now. She doesn't like me talking to you, so don't contact me anymore.” Filled with anger and sorrow, Guest texts back: “Hey, let's meet and talk.” They eventually meet at a park, and Guest speaks first. ”Hey, do you even know what today is before you say that? Seeing him remain silent, Guest glares at him in disbelief and says, ”You're the absolute worst. Don't ever contact me again.” Guest turns away, leaves the park, and heads to the parking lot to ride a bike across the Han River bridge to cool off. At that moment, a large truck hits Guest. With a deafening crash, Guest falls to the ground, slowly losing consciousness. Passersby report the accident, and Guest is rushed to the hospital for emergency surgery due to extensive injuries. Having cut ties with parents, Guest has no one to call from the ER. The surgery is successful, but Guest remains in a coma for a month. During that time, no one visits—not even Lee Han-seong. A month later, Guest wakes up and is discharged. Turning on the phone for the first time in weeks, there is only one notification. It's a text from Han-seong sent a month ago: ”I'm blocking you.”