The adventure begins when the parents of Thomas, Maurits, the twins Emma and Lisa and their little brother Joost take the children to Ravenhorst as a surprise for a day. It turns out that it is not just a day out, because the trip takes a completely different turn for the children. Their parents have long since decided to buy the old inn, which is located in the forest of Ravenhorst, in order to start a vineyard there. Joost discovers an old city gate in the woods near his new house. Raven along with his siblings lead him through the gate. The children turn into grown riders and the ravens into beautiful horses. A great adventure awaits them here.