Joaquin, the top killer of the Nielsen family was to murder a family of three, yet he came across a young boy named Davion who once saved his life, causing him to spare the young boy's life. Davion, oblivious to the truth beside his foster parents' death, wishes for Joaquin to train him in order to avenge his foster parents' deaths! With this, Joaquin became Davion's teacher. As a cruel killer encounters the innocent young boy, he seems to feel something change in this heart? When will the truth be revealed, and how will they be able to face it?

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