Amanda and Kara are cousins and best friends in an intertribal Native American family; but Kara's family leaves the city and moves back to the Rez, making both girls sad--but the summer reunion reminds them that they will always be cousins.

Alder has always lived in his cozy little house in Southern California. An old, reliable, comforting walnut tree has stood between his house and the one next door. When a new family--with a particularly annoying girl his age named Oak--moves into the neighboring house, they cut the tree down. As Oak and Alder start school together, they can't imagine ever becoming friends. But they soon discover a series of mysterious, possibly magical, connections...

Catrina and her family are moving to the coast of Northern California because her little sister, Maya, is sick. Cat isn't happy about leaving her friends for Bahía de la Luna, but Maya has cystic fibrosis and will benefit from the cool, salty air that blows in from the sea. As the girls explore their new home, a neighbor lets them in on a secret: there are ghosts in Bahía de la Luna. Maya is determined to meet one, but Cat wants nothing to do with...