Cassie (Catherine Bell) and Sam's (James Denton) long-awaited wedding has finally arrived in 'Good Witch,' and they take an enchanting walk down the aisle in 'The Forever Tree - Part 2.' As Middleton prepares for the most enchanting event of the season, Sam receives some magical help from Grace (Bailee Madison) in finding the Forever Tree. However, the wedding brings up complex emotions for Grace, who becomes nostalgic for her late father, while Cassie worries her foster brother will let her down and miss the nuptials. Abigail (Sarah Power) steps up into her mayor duties and makes a surprising ally, while Martha (Catherine Disher) finds a new passion for television. Meanwhile, Nick (Rhys Matthew Bond) takes a step toward finding his future calling, and Stephanie (Kylee Evans) faces an unexpected reaction when she confesses her feelings for the hospital's chaplain.

Cassie and Sam celebrate their honeymoon at a country winery, where they help their hosts deal with a dilemma. Grace encounters her first heartbreak and Abigail holds a joint fundraiser with Mayor Donovan.

Cassie, Grace and Abigail visit Cassie's alma mater, which is on Grace's list of top choice colleges. While there, Cassie receives an honor and helps her old college friend, Willow (Kathy Najimy) make a choice about her future, and Grace gets to know the school by connecting with her weekend host who's homesick. Left to watch Grey House, Sam (James Denton) and Nick (Rhys Matthew Bond) try to channel Cassie when helping father-son guests to communicate better. Meanwhile, Martha (Catherine Disher) switches to a hard-hitting gossip format to improve her TV show's struggling ratings, and Adam (Scott Cavalheiro) surprises Stephanie (Kylee Evans) with a date.