Summary about the book Journey to Volcano Palace?

I picked Secrets of Droon because it's cool. It's funny. They are in a desert to go on a journey to the volcano palace to save one of the three kid's mom. The Wizard and the princess help them find the way to the volcano palace. They go to places they never been to in their lives and they do stuff and then one of the three kid's mom gets better. My favorite part is in the middle. That's when all the cool parts happen. At the end the three kids Eric, Julie, and Neal meet new people and see new places and meet with the bad people and fight bad big monsters by the volcano and then go through a tunnel.