Carole, Stevie, and Lisa are worried when Belle comes down with a mysterious illness that even the new young vet can't diagnose. Red is left to manage Pine Hollow on his own. With everyone busy, Melanie and Ashley set out to ride an uncontrollable horse named Angel who seems to have a problem of running off with her rider.Then they get stranded in the middle of nowhere when they fall off Angel. The new vet saves Belle's life when he removes the painted wood from her leg.