The girls of Beacon Street persuade their families, school, and community to become more environmentally conscious, and participate in the Sally Ride Science Festival where they must present their own projects that support living Green.
Katani tries to juggle the demands of school work and a Think Pink fundraiser while working on her submission for a contest for young entrepreneurs held by "T-Biz" magazine and worrying that her competitor, Betsy, will write a better essay due to the growing popularity of her tutoring service.
The Beacon Street Girls fear the future may hold big changes for them when Charlotte's father wants to move away, Maeve starts stressing over an important project, and a new girl tries to join their group.
Seventh-grade friends Maeve and Avery discover that life can sometimes be tough as they face divorce in their families, boy trouble, and peer pressure by the Queens of Mean.
The Beacon Street Girls are drawn into the drama of class elections at Abigail Adams Junior High, as Katani wonders who is sabotaging her campaign and Charlotte tries to convince the others not to be so competitive.