Sinbad: Legend of the Seven Seas is a 2003 American animated film produced by DreamWorks Animation and distributed by DreamWorks Pictures1, using traditional animation with some computer animation. It was directed by Patrick Gilmore and Tim Johnson, and written by John Logan.
Sinbad and his pirate crew attempt to steal the magical “Book of Peace” while it is being shipped to Syracuse, Sicily, protected by Proteus. Proteus was once Sinbad’s best friend as a child and he tells him if it ever meant anything he can prove it. Sinbad tries to steal the book anyway, but is prevented when Cetus attacks the ship. The two work together to fight off Cetus and for a moment reaffirm their bond. Just when it seems the beast is defeated, Sinbad is dragged off the ship. Proteus goes to save Sinbad, but he is stopped by his crew.
Drawn underwater by Cetus, Sinbad is saved by the beautiful Goddess of Discord, Eris, who offers him any boon he desires in exchange for the Book of Peace. Sinbad and his crew go to Syracuse to steal the Book, but leave without doing so. Anticipating this, Eris impersonates Sinbad and steals the Book. Sinbad is sentenced to death, whereupon Proteus sends Sinbad to retrieve the Book instead, placing himself as hostage, and Proteus’ fiancée Marina goes to make sure that Sinbad succeeds. To prevent them from succeeding, Eris sends a group of mythical sirens, who entrance and seduce the men aboard Sinbad’s ship with their hypnotic singing voices, but do not affect Marina, who pilots the ship to safety. The Goddess of Discord later sends a Roc which captures Marina, but she is rescued by Sinbad.