Never Forget Your Enemy

Follows the lives and families of three adults living and growing up in the United States of America in present and past times. As their paths cross and their life stories intertwine in curious ways, we find that several of them share the same birthday - and so much more than anyone would expect.

Suddenly left without his trusted caretaker, Ptolemy Grey is assigned to the care of orphaned teenager Robyn. When they learn about a treatment that will restore Ptolemy’s dementia-addled memories, it begins a journey toward shocking truths.

When a tragedy disrupts her life, a teen moves in with her guardian's big family in a small town and learns new lessons about love, hope and friendship.

A boy falls to his death at school, but Ok Chan-mi does not believe that her twin brother, Park Won-seok, committed suicide. Chan-mi transfers to her brother's school, Yongtan High, and meets Ji Soo-heon, who witnessed her brother's death. A "hero," who avenges bullied students, appears at Yongtan High. Chan-mi speculates that it may be connected to her brother and starts looking for this hero.