Bloodstream (1985)

When up and coming director Alistair Bailey is fired from a project by notorious VHS distributor William King, he believes that his footage has been left in the trash can. He soon discovers however that King tricked him and is planning to globally sell the movie that he spent ages working on. As the lust for revenge strengthens, Bailey decides to don the same disguise as the one used by his antagonist and make a new feature. Only this time, the effects will be real.