After an explosion in the Everfree Forest of a potion of Zecora's gone terribly wrong, the already terrifying forest begins to change and becoming menacing. The Zebra is no longer allowed to go home, Fluttershy has to leave her cottage because it's too close to the forest. But the pegasus can hear the desperate cries of the animals that need her help. She decides to go against the order to stay away from the forest and enters, unaware that she will never again leave.