Kim Woo Bin is the son of Kim Jung Geun  who once worked for the chaebol businessman Lee Hee Bong. His only grandson Lee Jong Suk had fallen into the Han river on his 15th birthday during a cruise and his body was never found. Lee Hee Bong's property was then transferred from his grandson to his other son Lee Oh Seung

Not having lost hope for his grandson he hired private detective Kim Jung Geun to search for him. A month later, the private detective burned all the evidences he had and mysteriously committed suicide.

Kim Woo Bin, now aged 23, a rookie private detective, works for Lee Ho Jin. Lee Oh Seung is informed that Lee Jong Suk is still alive and afraid that the old man might again consider transferring the will hands the job to Kim Woo Bin to kill Lee Jong Suk.

Kim Woo Bin is under the impression that his father died because of Lee Jong Suk and thinks of this as a perfect revenge for his father and hence agrees to it.

But as he gets closer to Lee Jong Suk strange feelings keep him away from killing him though he had many chances. He develops a bond with Lee Jong Suk which make him open his eyes from his revenge and change him internally. A story of love, friendship and revenge.

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OK guys it's my first time so pls be supportive and I already think this story is a little crappy and complicated but I'm gonna try to make it simple and don't worry...a lot of jongbin sweet and cute moments will be there along with action and suspense.!

I had made a trailer but then I changed the story a little so I've removed it from YouTube and I'll working on a new one soon..

I will also try to update as soon as possible. Pls subscribe, like and comment !