To learn more about grim magic, Sophia, Ava and Layla sneak into the library after hours to borrow a restricted book that proves to be too powerful.

Eager to decode the message from the Whispering Willows, Sophia skips party planning to visit the Vision Pool — right after promising Ava she wouldn't.

The Sapphires try everything to get Sophia and Ava to stop fighting, but they've got bigger problems: Two dastardly henchmen are after the grimstone.