Determined to find the half-sister who was given away after her violent conception in the late-1930s Minnesota wilderness, Hux discovers that the neglected girl has grown up completely wild, causing Hux to fear that they cannot share family life.

After finding themselves mysteriously transported to a magical island, this time in a rainforest swamp, Daniel, Joy, and Kimani must figure out how to safely cross the island with their knowledge of friction and pulleys.