He used to be a highly gifted police detective but was forced to retire after getting blinded on duty. Since then he earns his living by solving cold cases for the police.
She is an up-and-coming hit team detective who has been feeling guilty ever since her childhood friend went missing after she refused to go out with her ten years ago.
On witnessing how brilliantly he solves a case, she decides to seek his assistance to find her friend. He accepts the invitation with his own personal agenda in mind.
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