Child-hero Ender Wiggin must fight a desperate battle against a deadly alien race if mankind is to survive.

Most children think twice before braving a haunted wood filled with terrifying beasties to match wits with a witch, but not Masha. Her beloved grandma taught her many things: that stories are useful, that magic is fickle, that nothing is too difficult or too dirty to clean. The fearsome witch of folklore needs an assistant, and Masha needs an adventure. She may be clever enough to enter Baba Yaga's house-on-chicken-legs, but within its walls, deceit...

Jason, Piper, and Leo, three students from a school for bad kids, find themselves at Camp Half-Blood, where they learn that they are demigods and begin a quest to free Hera, who has been imprisoned by Mother Earth herself.