From the moment they meet at a Catholic summer camp in Savannah, Georgia, Mary Margaret and Theresa, polar opposites, become inseparable. Each summer, they embark on wild adventures, exploring waterways, pulling pranks, and challenging boys to daring contests. But one prank too many gets them banned from camp, and the nuns can't shield them from the real world forever. As tragedy strikes, their friendship is forged in both joy and hardship.

The girls carry their bond to the beaches of Tybee and through the trials of a Catholic high school, where they face bullies, first romances, loss, and heartbreak. As their lives begin to diverge, Mary Margaret and Theresa struggle to hold onto the friendship that once seemed unbreakable. Can they find a way to salvage their connection as they enter the unpredictable world of adulthood?

The first in a generational trilogy, Full of Grace and Mischief vividly captures the coming-of-age experiences of two young women in the Deep South, celebrating their resilience and the enduring strength of friendship.