When Billy Clanton and his friends are murdered in Tombstone by the town marshal and his deputies, the growing tension between the local authorities and the ranchers spirals out of control. A once sleepy frontier town is now mired in hatred, with bad blood and scores to settle on both sides. Families are torn asunder as the violence rages on. Will there ever be peace in Tombstone, or will peace only come when one side reigns victorious?