Convincedthathisfather,whohaddisappearedintheoceantwoyearsearlier,isstillalive,the12-year-oldFelixsetsouttofindhiminthecompanyofoldTom,aretiredsailor,Quack,theone-leggedpickpocketingparrotandUlyssesthecat,whobehaveslikeadog.TheirjourneytakesthemtotheIsleofEternalNight,toanundergroundcitywhereasecretsocietyishidingledbythemegalomaniacMorgäa,holderofatreasure.