In the murky depths of Los Angeles' world-famous La Brea Tar Pits there lies an ancient secret - a creature that, awakened by underground construction, turns a night of somber packing for Barry Greenwood and his co-workers into a desperate fight for survival.

When a failed baseball player's ex-girlfriend moves back to the neighborhood with her seven-year-old daughter, he realizes he carries more regrets than how he handled his baseball career.