Eleven-year-old (nearly twelve) Celi Rivera, who is a mix of Black-Puerto Rican-Mexican Indian is uncomfortable about her approaching period, and the changes that are happening to her body; she is horrified that her mother wants to hold a traditional public moon ceremony to celebrate the occasion--until she finds out that her best friend Magda is contemplating an even more profound change of life.

Aida Salazar is an award-winning author and arts activist whose writings for adults and children explore issues of identity and social justice. She is the author of the middle-grade verse novels The Moon Within (International Latino Book Award Winner), Land of the Cranes (Américas Award Winner), the picture book anthology, In the Spirit of a Dream, and the picture book biography Jovita Wore Pants: The Story of a Mexican Freedom Fighter. She is a founding member of Las Musas, a Latinx kidlit debut author collective. Her short story "By the Light of the Moon" was adapted into a ballet production by the Sonoma Conservatory of Dance and is the first Xicana-themed ballet in history. She lives with her family of artists in Oakland, California.