When Sir Topham Hatt's father and King of Sodor passes away, the clumsy Thomas becomes the immediate successor of the throne. However, Thomas decides to find the legitimate heir Neville in a distant kingdom with his friends Percy, James and Henry to be able return to his beloved house in the Shed. Meanwhile, the envious and ambitious Prince Charming joins the villains of the fairytales plotting a coup d'état to become the new king.
