Bullen Gongo and the Four Walls (Electronic book text)

When ten-year-old Daiter Popski moves into a new house in Nevada with his family, he can't wait to see his bedroom. To his surprise, his bedroom walls are already painted with beautifully colored pictures of a giant forest, a sandy desert, a sparkling ocean, and an erupting volcano. When his father unknowingly gives him a special magic stone, the walls come to life, allowing Daiter to travel into new worlds and meet incredible creatures.

Unfortunately, by opening the doorway to these new worlds, Daiter releases Bullen Gongo, an evil tribal sorcerer who is determined to steal the five magic stones that give life to each world.

It's a race against time as Daiter and the friends he meets along the way-Nickel, Zardo, Bullf, and others-attempt to protect the magic stones and use them to capture Bullen Gongo. But can they stop Bullen before he becomes too powerful and destroys all the worlds, including Daiter's?