Seventeen-year-old Karou, a lovely, enigmatic art student in a Prague boarding school, carries a sketchbook of hideous, frightening monsters--the chimaerae who form the only family she has ever known.

Caught in the middle of an ancient power struggle, Emily and Pegasus must venture to Diamond Head volcano in Hawaii to track down the one thing that can save Olympus--before the Titans get there first.

Emily is contending with great changes, including diminished powers, but goes to London to rescue Agent B and others from the CRU, where she makes horrible discoveries about the agency's history.

Watching birds soar through the sky makes Uni want to fly! When Uni befriends a winged horse named Pegasus, it seems like flying might be possible. Uni's magic unicorn horn is good for helping others but it cannot make wings. Peg coaches Uni's creative attempts to make a set of wings. And it turns out that Uni can do some things Peg cannot do.

Reborn as the Flame, thirteen-year-old Emily has saved Olympus from destruction but when the gruesome Nirads begin a new invasion, Emily and her friends become entangled in the conflict as old grudges are unearthed and new enemies are discovered.