Kath, a shy young woman, befriends Bob, the reclusive gardener at a seaside hotel where she's getting married. Kath has never come to terms with her mother leaving home when she was eight and that her overbearing father, Ken, never talks about her. Now she is getting married to escape, only to discover that her fiancée, Steve, is completely dominated by Ken as well. Bob is a gentle, eccentric man with a dry sense of humour and a troubled past. He spent a long time in prison and in the years he's worked at the hotel he has never ventured beyond the gardens, which he tends with obsessive care. Kath sparks a connection to an unresolved relationship from Bob's past with a girl called Louise which resonates so strongly that he feels compelled to leave the safety of the hotel and confront his past.
Hellboy, sua namorada Liz e Abe Sapien enfrentam uma grande batalha quando um príncipe do submundo tenta recuperar a Terra. Cansado de viver à sombra dos seres humanos, o Príncipe Nuada tenta despertar um exército de máquinas assassinas para libertar as criaturas de fantasia na Terra. Apenas Hellboy pode deter o príncipe sombrio e impedir a aniquilação da humanidade.