But that's not what happens. Mom and dad take off on their own, leaving Alex and Katie in a creepy old house with their weird Aunt Karina.
Alex is upset and disappointed and thinks that his summer is ruined. But then, he and Katie discover Aunt Karina's magical library and an old fireplace.
At the back of the fireplace is a secret door, a portal into the magical world of the Firebird.
Ready for some excitement, Alex and Katie jump through the portal and ran off into the meadow looking for the Firebird and fun adventures.
Instead, they find Baba Yaga, the Russian witch. Or, rather, she finds them as they lose their way in the dark forest.
"We got a little lost," Alex says to Baba Yaga.
"And now you may get a little eaten!" Baba Yaga responds and takes a step closer...