Luo Bin's father was a police undercover agent who was discovered by the other party during the execution of his mission, and then both he and his mother disappeared.
Their only son Luo Bin has been taken care of by Zhang Hanbo, his father's old colleague in the police station.
One day after graduating from college, he was told that his parents might not be dead yet.
Holding a glimmer of hope, Luo Bin changed his name and surname to explore the place where his father once lurked, but he couldn't find any trace of that time...
Could it be that Mr. Zhang lied to himself?