Everything is frozen by the evil Snow Queen, you have to save the frozen animals by collecting their image parts from the game.
Swap 2 items and create 3 in a row to remove the items from the game. Collect all parts from the image of the frozen animal to advance to the next level.
You can get help from the magic dragons. Activate a dragon by removing a color from the game, if you remove that color again the dragon will give you a specific bonus.