TheadventurebeginswhenLucasa13yearoldboyembarksonthevacationofalifetime.Whendisasterstrikes|Lucasfindshimselfstrandedinastrangelandlitteredwithghostshipsandprehistoriccreatures.Whilesearchingforothersignsoflife|Lucashearsaradiobroadcastinthedistanceandisdrawnintothejunglewhereheencountersabeautifulyounggirlwhoclaimstohavecomefromthe1950s.Togethertheysetoutonaquesttogethomeallthewhileuncoveringsecretsthatwillforeverchangethefuture.