Brave the Betrayal begins with Jalil, April, Christopher and David leaving Olympus in search for Senna's mother, who may be in "Egypt", and who can possibly send the Coo-Hatch back to their own world. The book follows their journey through the Sahara desert in the Everworld-Africa. They meet an old man called Eshu, who beings as their guide but soon Jalil and the others discover Eshu is not who he appears to be.

All in all, the group is collectively tired of dealing with Gods and demi-Gods who are self-centered, selfish, and treat mere mortals as play things. While the Olympians were by far the best of the Gods we've met, the Orishi Gods demand sacrifice to appease them. When April refuses a sacrifice to a God who is not her own, and Jalil refuses to be bullied out of his beliefs, the group finds themselves in an upside down land where the grass is blue and the rivers are purple, and everything is literally upside down.

We see the Vikings again, who I just love. They are so funny, and really the only decent set of beings in Everworld. The book ends with a battle of wits and determination that nearly kills Jalil, April, Christopher, Senna and David. Now, they're on their way to find Senna's mother, who is a priestess of Isis.