Harvey finds out that a class action suit has been filed against his firm's newest client, Quentin Sainz. It turns out Sainz's company made a drug that extends the lives of ALS sufferers (Lou Gehrig's Disease), but a small number of users claim the drug caused liver failure. Harvey is reluctant to take on the class action suit because he assumes there's no way they can win, but Jessica reassures him by revealing that she knows and trusts Sainz because he used to be her husband.

After razzing Jessica about her marriage, Harvey tells her to stay out of his way if he's going to successfully defend this client. Taking the reigns, Mike and Harvey head into negotiations and are blindsided with a $250 million lawsuit from the victims' ambulance-chasing lawyer, Collin Church. Sainz scoffs at the number and Harvey tells the slimy lawyer that there's no chance they'll be receiving that kind of settlement. Now, if Harvey and Mike are going to make their much smaller offer stick, they'll need to find out how effective this medicine really is.

Meanwhile, Mike takes on his own pro bono case for the first time. Mike meets his client Frank, who is being pressured out of his apartment by a landlord who won't take care of a bed bug infestation, among an assortment of other problems. Mike takes charge and has the bureaucratic City Housing Preservation office take a look at the problem. But when Mike strolls into his first court case, he could be in for a big wake-up call.