Sophia's good intentions lead to catastrophic events. Now the fate of Unicorn Island depends on the Sapphires — and the one test they dare not fail.

Working together unlocks a new bond for the Sapphire riders — and with it, new abilities. Then, Valentina comes clean to Sophia about the crown stars.

For their final test, the students must infiltrate ogre-guarded ruins and rescue a hostage before the last bell rings... or risk immediate expulsion.

Ms. Wildwood tasks the Sapphires with keeping wild unicorns safe from a volcano, which Sophia uses as an opportunity to search for another crown star.

A legendary unicorn rider visits campus, stirring tensions between Sophia and Valentina. Layla gets jealous when Glacier reunites with an old friend.

Ava throws a party for a foal that's been causing chaos around campus while Sophia investigates her father's connection to the Unicorn Constellation.

On a Sapphire camping trip, a constellation that only appears every five years sends a special surprise down to Earth. But something troubles Wildstar...

While gathering starburst flowers for the Fairy Moon ball, an accident breaks Isabel's trust in River, allowing a mysterious stranger to step in.