You are a veteran priest from the Proselytizers' Order.
Your Order's mission is to help mankind colonize new planets to spread the Religion. Of course aliens must convert or die.
Your Order doesn't like your eagerness for destruction but they need you on a distant world.
You are freshly debarked at this dangerous place. They gave you a dying ship you'll have to improve. The bloody routine? Yes… until an event blast your faith away.