There Will Be Blood is Anderson's loose adaptation of the novel Oil! by Upton Sinclair, and it focuses its attentions on Daniel Plainview (Daniel Day-Lewis), a miner who, using plain-spoken and straightforward language, launches a campaign to convince small-town property owners that they should let him drill their land. Without him, they won't have the equipment to access the profit beneath their feet. He builds an empire this way -- and gradually becomes obsessed with the intrinsic value of power, growing increasingly irascible and paranoid in the process. Plainview meets his match in Eli Sunday (Paul Dano), a teenage preacher in the small California town of Little Boston, whose brother tipped Plainview off to the town's plentiful supply of untapped oil. To fully reap the benefits of the land, Plainview must suffer the opposing whims of this "prophet," whose legitimacy is questionable at best. And it's unclear if either man is prepared to pay the humiliating price the other wants to exact.