Could you be a True Rider?Winter has come to Moonlight Stables and with it, the biggest competition of the year, the mounted games cup! Amara and her friends have a real shot at winning the competition but as the event nears, everything keeps going wrong!First, a mysterious fog threatens to injure Alex and Rose and then, there are sightings of a mysterious white mare running wild. When the friends discover that Storm Stables are the only team not effected, their suspicions are high. Can they prove Storm Stables are behind the mystery and can they stop them sabotaging the competition?