The author of a series of magic-and-romance-filled novels comes to Grey House to celebrate the release of her newest book, titled "The Enchantress Unites". But it's Cassie who ends up doing the uniting, bringing together the people of Middleton to put on the special event while also coming to a special realization about Sam.
The whole town anxiously awaits the impending blooming of the Middleton Merriwick, but when the plant is cut, it has dramatic impact upon the Merriwick women; Grace begins to suspect Nick is going to ask her out.
The Middleton Merriwick is still not in bloom, and the effects are being felt around town. An old friend and colleague of Abigail's checks into Grey House claiming to want a relationship. With help from Cassie, Ben stumbles upon the old Middleton Theater and is motivated to get the place running again.
Two guests at Grey House are immediately at odds, so Cassie uses her magic to bring them together. Sam tries to plan the perfect date for Cassie, but various nuisances keep getting in the way.
Cassie helps Ben find an old romantic film to showcase at the refurbished Middleton Theater's opening night. Martha's promises to the town are in jeopardy when she overextends herself with the Middleton budget.
A visiting chef can't relax, so she follows Cassie's advice and spends a day stirring a recipe in order to quiet her mind. Grace is presented with the Merriwick Wish Book for her birthday and is encouraged to make an entry.
Abigail, jealous of all the attention Cassie gets from helping her customers, decides to sell "special" chocolates at her flower shop.
Cassie invites a traveling artist to stay at Grey House, so he can can get some hard needed new inspiration.
Cassie decides to plan a surprise party for Sam to celebrate the anniversary of his move to Middleton; Grace (with some urging from Abigail) decides to use her powers to create situations where she and Noah can get together.
Cassie discovers a 10-year-old girl playing in the bushes at Grey House; Martha announces that her son Michael is getting married; Sam's sister shows up for an unexpected visit and he is very happy to see her, though she does not seem like herself.
After learning that Sam doesn't plan on getting married again, Cassie goes to Chicago to clear her head; Michael and Vanessa get fed up with their mothers while planning the wedding.