Hannibal and his cannibal crew plan the ultimate heist; Walt Disney's frozen head.

Knox

I would think "Fort Knocks" would be the ultimate heist. Not sure from your logline why anyone would want or need Walt Disney's head.

You should probably add some motivation to help the reader understand why it's the ultimate heist and why the lead character need Disney's head.

Hope that helped, good luck with this!!!

This is quite intriguing though, agree with the above but does make you want to know more!