Fear Agent (2007)

Down on his luck and drunk as a skunk, Heath Huston, alien exterminator, stumbles upon a corrupt and immoral alien race using religion as a justification to drain a sun of the energies that sustain it. This race of scumbags always finds a rationale to put economic bottom lines before the cost to life and the environment. With no love for money-grubbing heartless manipulators, Huston hires himself to stop the twisted operation in hopes of saving the lives of billions of creatures . . . and maybe for a bit of personal satisfaction.