Lin Zhixia, 20, is a genius programmer: aloof and solitary. Three years ago, her mother vanished under mysterious circumstances. The police closed the case as a voluntary departure, but Zhixia is convinced her mother was murdered.
One summer night in 2024, an old phone appears out of nowhere beside her bed. A user named "Swallow" sends her a message: "Someone is waiting for you in the future. Don't give up."
"Swallow" knows all her secrets: how she sneaks a look at her mother's photos late at night, bites her pen cap while coding, and spilled coffee on her white T-shirt today. Even stranger, "Swallow" sends a photo taken from Zhixia's left, where there is nothing but a wall.
"I told you you wouldn't believe me. I'm you, one year from now."
A love story spanning a lie across time, and a race against death to uncover the truth. As the day of the fire draws closer, the two girls go from suspicion to trust, from strangers to lovers. Before the flames consume everything, they must find the evidence, unmask the culprit, and then... meet alive.
