Ayoungboytakeshismother’splaceinagroupofgemstone-basedbeings,andmustlearntocontrolhispowers.ThisseriesissetinthefictionalBeachCity,whereagelessalienwarriors,theCrystalGems,liveinanancientbeachsidetemple,protectingtheworldfromevil.Theyprojectfemalehumanoidformsfrommagicalgemstonesthatarethecoreoftheirbeing.TheCrystalGemsareGarnet,Amethyst,PearlandSteven,ayounghalf-human,half-Gemboywhoinheritedhisgemstonefromhismother,theGems’formerleaderRoseQuartz.AsSteventriestofigureouthispowers,hespendshisdayswithhishumanfatherGreg,hisfriendConnie,otherpeopleinBeachCity,ortheotherGems,whethertohelpthemsavetheworldorjusttohangout.Heexplorestheabilitiespasseddowntohimbyhismother,whichincludefusion(theabilityofGemstomergetheiridentitiesandbodiestoformanewandmorepowerfulpersonality).《宇宙小子第三季》是丽贝卡·舒格于2016 年在美国 导演，由Zach,Callison,Deedee,Magno,Estelle,Swaray等出演,剧中使用英语对白,是一部欧美动漫动漫。