Island of the Child King

Island of the Child King (listed as The Island of the Child King in TV guides) is the 18th episode.

Mahad and Lena travel to an old hotel in a faraway block, where a make-shift orphanage has been made. The leader of the block, an older child himself, refuses to believe Mahad and Lena's warnings that the Sphere is on their way, until things get serious.