Ben must install a pair of outsized fish tanks around a fireplace at a private residence in Orlando. This proves to be challenging for Ben, and if he can't pull it off it will jeopardize the company's reputation and make it impossible for the family to move into their home. Meanwhile, Mat goes to Chicago to work on a terrarium for an amphibian known as the Panamanian Golden Frog-a rare animal on the brink of extinction. If the tank isn't perfect, the survival of the species could be at risk.

Francis decides to bring his lady friend to work and make her a tank full of live coral. Meanwhile, a huge client has commissioned the team with an incredible project at Grand Cayman. The tension mounts for Francis when Mat forbids him to spend his professional time to work on the tank for Lauren and sends him to Grand Cayman to oversee the project. Things only get harder when the team misses items whose absence will prevent them from completing the biggest project ever. Will they make it?

Jose goes to meet with a client who wants a temporary aquarium built and installed in only two weeks. He is confronted with a difficult decision: should he give in to their requests, which might cost him his job, or install the temporary tank for the famous client who might bring his team favorable publicity? Meanwhile, Ben and Francis visit Orlando, Fla., to perform a total reef makeover. If anything goes wrong with this tight deadline, this house of cards is going to come tumbling down.