There has been one kingdom and this kingdom isn’t happy at all. The whole place is under attack of several enemies. Welcome classic match-3 form.
Every level is about dealing with waves of enemies trying to destroy your walls. The only form of defense is matching several types of elements and finding three of the same kind will release a spell from the place where you successfully matched them. Other things can be used as well, there are traps and weapons which can be bought for gained money. The game is about experience as well, after every round you can increase the power of spells or unlock new bonus spells helping you in matching.