About Power Rangers Season 13, Episode 4 : Walls

Sky's bitter jealousy of Jack's position as Red Ranger comes to the surface once more, as he becomes more confrontational and isolated from the team. Meanwhile, Grumm's Troobian forces scheme the hijacking a convoy carrying a vast amount of diamonds, which they scheme to convert into a new form of energy, can Sky put his grudges aside to help the team stop them?