Film, insanların dünyası ile fantastik yaratıklarla dolu bir dünya arasında sıkışıp kalan Hellboy'un hangi tarafa ait olduğunu bulmak için çabalarken, bir yandan da Kral Arthur zamanında yaşayıp Merlin'in güçlerini çalan kötü büyücü Nimue'nin intikam almak için insanlığa açtığı savaşı durdurma çabasını temel alıyor.

Hellboy 3

Kathleen is an upcoming fashion designer living in New York City with a successful lawyer/boyfriend. She thinks she has it all until her grandmother dies and leaves her a house and farm in the country. Kathleen discovers a whole new world as she meets Oliver, a handsome local doctor who helps children with emotional disabilities by specializing in Hippotherapy and therapeutic horseback riding. Now Kathleen must decide between keeping the farm or selling it to a wealthy couple who want to turn it into an upscale resort while also dealing with her new romantic feelings towards Oliver versus her boyfriend back in the city. Kathleen's career, love life, and entire lifestyle hang in the balance in this uplifting romantic adventure that proves home is most definitely where the heart is.