[s4e1]: The Three Impossibilities

If Mildred fails to complete the challenges by dusk, the transformation spell becomes permanent, and her old self will be gone forever.

Continues to be strict with Mildred, fearing her "chaotic magical abilities" will lead to disaster. [S4E1] The Three Impossibilities

The episode begins with Mildred Hubble and her friends returning to Cackle's Academy. After a botched potions experiment, Mildred's appearance is permanently transformed into a girl named . To reverse the spell before sunset, she must find and complete three legendary "impossible" challenges. The Three Challenges If Mildred fails to complete the challenges by

A second riddle or grid that the girls must solve quickly. After a botched potions experiment, Mildred's appearance is

Involves navigating a complex stone template or grid found in an abandoned tower room.

Disguised as "Ursula Catnip" (played by Lydia Page, replacing Bella Ramsey), she struggles with her new identity while trying to fix her mistake.