Phantom stallion: Wild Horse Island

At her grandfathers horse ranch on Hawaii, Darby Carter tries to win the trust of the mustang which she had rescued.

After spotting a beautiful elusive pink roan mustang in the forest, Darby overcomes her fears of the dark woods, visits her great-grandmother, and uncovers a secret tragedy that led to a terrible fight between her two best friends.

When a volcano erupts and leaves Darby and Hoku stranded during a camping trip, Darby must think quickly to save them both and prevent the untrained mustang from returning to the wild.

"Darby doesn't understand how her mother, who grew up on Wild Horse Island, ever could have left. Now that Ellen Carter has come back to the island to visit, Darby hopes her mom won't want to leave again. But Darby's grandfather and mother can't stop fighting, and Ellen wants to take her daughter back to California. When Darby finds a wild mare in the rain forest, she hatches a plan to convince her mom to stay --but will it work? Or will Darby have...

Ann's parents' equine rescue program will be shut down if Ann cannot get her horse, Sugarfoot, to behave, so Ann and Darby decide to enter Sugarfoot in the island's charity race in order to use up some of his excess energy.