The Silver Sisters are back to Pruet on their third summer yet, and the town's tricentennial, a celebration to celebrate the town's 300th birthday is taking place with lots of festivities! Philip Rathbone, the famous Hollywood director was shooting a TV show right here in Pruet, and Marigold gets the part of a waitress. Marigold also meets Mr. Rathbone's niece, Chloe, who is in her school. Marigold is determined to make Chloe her new best friend, but Chloe is more interested in Zinnie than she is in Marigold. Tension rises as Marigold asks Zinnie to give her and Chloe some private time. However, Chloe (as Brave13) reads Zinnie's blogs and secretly tells her interesting places to go to. On the other hand, between organizing the Tricentennial and carefully keeping a new friendship, Marigold is confused, and doubts herself. Can Zinnie live up to her promise and stay away from Chloe? Will Marigold ever believe in herself? Can the sisters keep their promise not to fight in front of Aunt Sunny? Or will their best summer end up a flop? To find out, read: The Silver Moon of Summer.