Issie gets a new vision of Mystic running through the forest along an old railway track, and wonders if this might be the clue that will lead her to Blaze's herd. After some encouragement, Issie decides to ride out on Blaze to find the tracks, and Caroline, Caleb, Dan and Natasha join her on the mission.

The kids stay at the stables during a storm, secrets are exposed and a new mission formed.