Valley of the Unicorns (S01E04)

The children rush to help Silvermane, the leader of the last unicorn herd, who is being attacked by wolves. However, their focus shifts, allowing the wicked wizard Kelek to kidnap Uni. Determined to rescue her, the kids discover Kelek's sinister plan to steal unicorn horns to exploit their teleportation abilities. Unfortunately, they arrive too late to save Uni, who is now weak and without her horn. The kids manage to free the other hornless unicorns and ask them to guide them to the Valley of the Unicorns to safeguard the last three from Kelek. Unbeknownst to them, they're inadvertently leading a hidden threat into the valley.