[s21e16] Vrak Is Back (1) -

: By draining Orion, Vrak turns the Rangers’ Legendary Keys to stone and disables their Super Mega Mode . This forces the team to revert to their original Megaforce forms and arsenal, including the Gosei Great Megazord . Dark Robo Knight Returns

In Episode 16, " Vrak is Back (1) " , the stakes reach a boiling point as one of the series' most calculated villains returns to reclaim his birthright after the demise of his brother, Prince Vekar . The Master Plan: Earth on the Brink [S21E16] Vrak is Back (1)

: Vrak reveals his master plan to plant three massive drills in the land and sea to reach the Earth's core and turn the planet into dust. : By draining Orion, Vrak turns the Rangers’

Vrak isn't just back for revenge; he’s back to finish what he started with a multi-layered plan to literally tear the Earth apart: The Master Plan: Earth on the Brink :

: Forced to fight their former ally, the Rangers—particularly Noah —are devastated to see the guardian of the environment now acting as the "Destroyer of the Earth". The Ultimate Deception

The most emotional blow for the team is the return of Robo Knight , who has been MIA since the Megaforce finale.

: Vrak reveals he has been holding Robo Knight captive and has reprogrammed him into Dark Robo Knight.