A World Without Heroes (Beyonders)
Jason falls into a hippo's mouth and finds himself in a fantasy world ruled by an evil wizard named Maldor. Rachel is visiting Arches State Park with her parents and falls through an arch ending up in the same fantasy world. The two of them make a journey to gather the six syllables of the magic word that will defeat Maldor facing a wide variety of trials and meeting a wide variety of people along the way. It was just OK because I couldn't connect with either of the main characters.