Matt has taken a job to help an oil rig uninstall some seafloor platforms. This is a deep and dangerous job, so it requires an ROV with a jackhammer arm - the problem is, Dominion doesn't have one. That's never stopped them before. Matt and Dwayne start to build a jackhammer robot arm attachment for one of their biggest ROVs. While Matt and Dwayne hurry to beat the clock, so are the divers. The Harbour Hopper, an amphibious sightseeing tour bus is having a rocky transition from road to water. The divers are using an on-board crane to lift heavy concrete slabs into the shore to extend the ramp. Diving in shallow water is dangerous and hard on the divers, not to mention the tide is on its way out, and the Harbour Hopper is on its way back. They need to finish the job before both those things happen.