Its a fantasy movie derived from the warcraft game in which there are two worlds. One world are of humans and the other world is of orcs.
The orcs most powerful person lets call him magician coz I forget his name:D open a portal to earth from which the different clan leaders with their warriors come to earth to conquer it. Their world is being destroying by the magician from inside but to get a new home and not dare to challenge him every orc follow him.
In the other hand the king call for a help from guardian which is the magician of the earth but instead of helping them he also get corrupted to become more powerful.
The fight is fought between humans and the orcs but ends with a different way.The general becomes the king later and to whom she loves( half human half orc) becomes the leader of the orc.Worth for the one time watching. At first you won’t understand but watching it properly you will get to know the story.