Lee Taemin, an ordinary high school student living in the busy city of Seoul, raised only by his Mother, what happens when he meets Choi Minho, a quiet and mysterious boy who suddenly appears in his school as a new student? What obstacles will Taemin face when he finds out about his Family and his Mission.

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"You'll die tonight!"

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"RUN!"

"I'll stay with you hyung. I love you."

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