The proprietor of an ice-skating revue promotes a peanut-vendor at the show to a management position based on suggestions he made to improve the act of the show's star, who also happens to be the owner's wife. However, he soon begins to notice that his new manager is paying more attention to his wife than he believes is appropriate, and begins to suspect that his new manager has designs not only on his wife but on his business. Meanwhile, someone from the new manager's past shows up with information that could wreck his plans.
Big Baby tells the story of Adam Lewis, a successful horror screenwriter struggling for inspiration for his latest script. After a graphic and realistic nightmare of a hulking man dressed in a baby mask and onesie who axe murders his girlfriend Kate in the middle of the night, Adam gets the inspiration he needs for his new screenplay. Excited about the direction his story is taking, he starts losing himself in his script. Things are better than ever for Adam and Kate until “Big Baby” starts appearing in real life and tormenting and killing victims fueled by his own revenge. Characters from Adam’s script begin to pay him visits pleading for their lives, and he quickly realizes he holds their fate in his hands. Power and fear completely consume Adam until his girlfriend Kate is terrified of the man she once loved.