Grimlord is developing a substance in his underwater lab that will make it impossible for the Troopers to use their V.R. powers anywhere the substance is applied. When the Troopers spot the substance off shore near the beach, Ryan dives down to check it out. He meets OCTOBOT who has spread the substance into the surrounding water. With Ryan unable to use his V.R.Power and transform, he is trapped underwater with his air running out. J.B. and Kaitlin must find a way to reach Ryan and destroy the underwater lab that is manufacturing the substance before it's too late. With time running out, J.B. drills through the bedrock to enter the lab without passing through the water, and then he and Kaitlin destroy Octobot to neutralize the substance to enable Ryan to transform out at the last moment.