Twelve-year-old Gordy Stitser is one of the few people who knows the truth about the secret society of potion masters, because not only is Gordy’s mom on the Board of Ruling Elixirists Worldwide (B.R.E.W.), but she has also been training Gordy in the art of potion-making. Gordy is a natural, and every day he sneaks down to the basement lab to invent new potions using exotic ingredients like fire ant eggs, porcupine quills, and Bosnian tickling juice. One afternoon, Gordy receives a mysterious package containing an extremely rare potion known as “The Eternity Elixir.” In the right hands, the Elixir continues to protect society. But in the wrong hands, it could destroy the world as we know it. Now, sinister potion masters are on the hunt to steal the Eternity Elixir. It’s up to Gordy, his parents, and his best friends, Max and Adeline, to prevent an all-out potion war.

It has been nine months since Gordy and his friends, Max and Adilene, Saved B.R.E.W. (the Board of Ruling Elixirists Worldwide) and the Vessel—the power source for the secret society of potion masters. Now, Gordy is starting the eighth grade, and has been trying new potion brewing techniques, but when he starts zoning out during practice, he knows something is wrong. Gordy and his friends continue to work on their potions, but when Gordy chooses Max as his lab partner, Adilene starts to wonder if she still has a place with her old friends. She turns to a new friend, Cadence, who might know a way to help Adilene become a potion master on her own. And in Greenland, Mezzarix has a chance to escape his Forbidden Zone—as long as he agrees to work with the mysterious Ms. Bimini and replicate an unusual solution known as “Silt.” It could be just the weapon Mezzarix needs to destroy B.R.E.W. forever. With both B.R.E.W. and the Vessel in danger, and with the potion world in chaos, it’s up to Gordy, Max, and Adilene to rally the remaining Potion Masters before it’s too late.

Mezzarix has stolen the Vessel, the source of power for all potion masters, and is preparing to launch his final attack on the potion-making community—which includes his own family. Gordy and his family have gone into hiding, but when his mom uncovers some new information, she takes Gordy into the underground network known as the Swigs, a haven for renegade potion masters and black-market potions, to secure support in the fight against Mezzarix. But when Scourges, rebel potion makers acting on orders from Mezzarix, attack the Swigs, Gordy barely escapes with his life and is forced to leave his family behind. As the fight intensifies between B.R.E.W. and the Scourges, it falls to Gordy and his friends—Max, Sasha, and Adilene—to locate Mezzarix's hidden headquarters, retrieve the Vessel, save the world, and unite the potion-making community. The world of Potion Masters is full of fantasy and adventure as Gordy and his friends learn the power of friendship and loyalty, and to trust in their own individual talents.