How did Charles and Erik become involved in the war against the Sentinels? It started with a love affair, which ended up re-igniting the friendship of two men, thought to be enemies. When Logan goes back in time, he realizes that the way to unite them under a common cause is to ignite this love affair. The problem? Charles doesn't want his daughter in love with the enemy's son.

Cuando Percy Jackson vuelve a la escuela tras haber derrotado a Gea y escapado del Tártaro todos notan que ha cambiado. No les da ninguna pista sobre su desaparición, no hay manera de descubrirlo. ¿O si?