When Hee-Ju's hostage negotiations with Ha-Eun, Yumei, and Mi-Woo for Ya-Ho go south, the tragic result of his failed attempt leads to heartbreak for Myung-Ee and company. And to make it worse, those on Earth aren't the only ones on the move. The leader of the Moon Foxes is about to make a trip to the Blue Planet and mete out heavenly punishment to those who get in his way...that is, if he can stay awake for long enough!

All this time, Myung-Ee has wanted nothing more than to save Yu-Da the Black Rabbit from the horrific fate of being killed and having his immortality-granting liver eaten by Hang-Ah, the leader of the Moon Foxes. But when both she and Yu-Da regain the memories of their past lives, Myung-Ee is suddenly preoccupied with a new conviction to save Hang-Ah! What does this change of heart mean for Yu-Da, her childhood friend, who has the power to do just that with his death?! Find out as Myung-Ee and Yu-Da face off in the intense conclusion to Moon Boy!

The Black Rabbit disappears again, this time leaving behind the Fox Tribe's only means of tracking him! Worried that the tribal elders will discover the truth, student council members Sa-Eun and Jin-Soo split up in a frantic search for their ward...only to find themselves facing off against the most improbable of enemies! After this battle, will the student council ever be the same?

As Ho-Rang tries to stave off the swarms of escaped low level foxes, Myung-Ee grudgingly forms an uneasy alliance with Sa-Eun in order to track down Yu-Da, who has opted to reject both the Rabbits and the Foxes and side with the eerie Ha-Eun. But when the two part ways upon reaching Ha-Eun's headquarters, they're both confronted by their pasts instead of their quarry! As Sa-Eun discovers the truth behind his elder brother's fate, Myung-Ee begins to lapse into her memories from a past life! And what she remembers will shift alliances and alter the fates of everyone involved!

Myung-Ee decides to rescue Yu-Da from the Fox Tribe! She begins by journeying to Junghyun Mountain to join the Soon-La Army. But first she must pass a test of pain and endurance. Meanwhile, more secrets are revealed about the kind and gentle Yu-Da...

Myung-Ee confronts the student council about their intentions toward Yu-Da, despite further proof of his unusually cruel and malicious dark side. As the school festival rolls around, the gender-bending fun courtesy of Master Yang is cut short when Yu-Da is kidnapped and Myung-Ee and Sa-Eun find themselves on the same side and face-to-face with members of the Soon-La Army...on the attack!

Having survived the battle with the Soon-La renegades, Myung-Ee can't remember anything about the fight! In her quest to discover what really happened, she finds herself crossing paths with Sa-Eun more than once. Though he stays silent about the battle, he lets slip a shocking secret about himself to his rabbit adversary! Meanwhile, Yu-Da has returned safely with the help of two mysterious friends...who seem intent to wreak havoc on both the Rabbit and Fox tribes! Is the Black Rabbit slipping away from Myung-Ee for good?