Professor Grubbly-Plank is the temporary Care of Magical Creatures teacher in Hagrid's absence. She tells the students that Hagrid is indisposed, but does not elaborate further.
Grubbly-Plank leads the students around the paddock where the Beauxbatons horses are being kept and towards a tree on the edge of the Forest, where a unicorn is tethered. Grubbly-Plank tells the boys to keep back from the unicorn, and encourages the girls to approach the creature.
The teacher continues to take Care of Magical Creatures classes for the rest of the week in Hagrid's absence.