A lesson on family trees gets Mildred thinking about finding her dad. Ethel can't resist making a cruel joke at Mildred's expense. Sports Day pushes Maud to take desperate measures.

Mildred can't understand why the girls are so scared of collecting potions ingredients in the woods until she comes face to face with an unusual creature. Sybil gets a surprise visit from her big sister and Miss Cackle struggles to deal with the guilt of seeing non-magical Esmerelda.