A young man who was born without an immune system and has lived his life within a plastic bubble in his bedroom finds out that the woman he has loved since childhood is about to be married at Niagara Falls, so he builds a portable bubble suit and ventures into the outside world to win her affections.

After his parents' death, Jacob Jankowski is left penniless and homeless. Events lead him to joining the circus as their vet, working under their unstable boss August whose violent tendencies give everyone reason to be cautious around him, including his beautiful and quiet wife Marlena, whom August is very possessive of and who Jacob finds himself soon falling in love with.