Back on mysterious Bald Head Island, North Carolina, a teenage girl and eleven-year-old boy are in trouble, and Chihuahua detectives Starfoot and Brown are on the case.

Isabel is a gifted, fifteen-year-old saxophone player, whose scientist father is in danger on the other side of the world. He texts Isabel a frightening message that sends her into hiding on Bald Head Island.

Jordy is a boy unlike other boys. On a school trip to the island, he follows his curiosity into the woods and finds himself separated from the rest of his class.

Fate comes to fruition when Isabel and Jordy...