Episode Title:Chaos at the Earth's Core.Episode Description:Supergirl, Stargirl, S.T.R.I.P.E., and Green Lantern help Warlord liberate Skartaris (a hidden world inside the Earth's core) from Deimos, a brutal dictator while protecting a very large piece of Kryptonite from Metallo and Silver Banshee. Originally titled "Heart of Stone".[citation needed]