FollowMiguelandhisaccompliceLilí,whoareattemptingtoretrieveatreasurefromanunderwatershipwreckofaSpanishgalleonthatsankduringtheWarofIndependenceontheAtlanticcoastofMexico.Thepairmustaskfortheassistanceofagroupofbanditstoaccomplishtheunderwaterheistbuttheylaterfindouttheyarenottheonlyonesaftertheforgottentreasure.