The Secret Door is an episode of season 5 of Blaze and the Monster Machines.
Description[]
Blaze and AJ are driving through the outskirts of Axle City when they stumble upon a mysterious door that leads to a fantastic, magical world, where they make brand new friends; when an evil princess from a magic-less kingdom comes to steal all the magic from their new friends' home, Blaze and AJ must help their new friends save this enchanted world.
Synopsis[]
Blaze and AJ are driving through the forest when they stop a hidden door on a stone wall nearby. When they go through the door, they end up in a brand new, magical world. There, they meet a pegasus named Sierra, a a mistwolf named Zephyr and a fairy named Adura, who are best friends like Blaze and AJ are. They decide to show their new friends around Corona.
Meanwhile, a team of four horses bring snobbish Princess Niva of Iniri, a magicless world, and becomes fascinated with it, and tries to discover how to take it all for herself. One of the horses says that if she goes to the Top of Mount Avalon, she should be high enough to use her scepter to take all the magic from the land. This was overheard by a satori (a winged leopard) named Lyra, and goes to warn Adura. Once warned, Adura, Zephyr and Sierra decide to stop her themselves, but Blaze and AJ insist they come along. The three friends agree, and they all go on as Blazing Amazing plays.