Hey, this is awesome! A trio of images telling the threeling (haha) adventures of a trio of heroes fighting a three-headed-dragon to get the threesure (hahahaha) locked by a three-shaped key! That's a lot of threes.
I like that you made 3 separate images to tell the story, it's fun! Also the trio reminds me of the Trine game series, which are great games meant to be played by three players :)