If you are talking about the game's story, I'll give you a quick summary of the major events:
The protagonist gets caught up in a spell cast by a Witch. He explores a bit and finds a village. The Elder of the Village explains what the effects of the spell are and asks the protagonist is kill the Witch. To do so, a seal which protects the Witch's tower needs to be broken by killing three Beasts.
Keep in mind that this is a grossly oversimplified version of the story :D
If you wanna get more info and a better feel for it, you can check out the game's demo here: https://vlosyros.itch.io/saharul