Arc 1:
When Ben is killed in an attack by a rival sect, his soul is summoned by a goddess of another world to serve as her champion. That world is Arwa, where humans have lost everything. And he is to save them. The task seems impossible, but there is hope: he is a cultivator.
What happens when you can't control the power you get? What if you lose everything?
Arc 2:
It's a worm.