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
A second riddle or grid that the girls must solve quickly. [S4E1] The Three Impossibilities
Continues to be strict with Mildred, fearing her "chaotic magical abilities" will lead to disaster. The episode begins with Mildred Hubble and her
The "Three Impossibilities" are a set of tasks left by the very first Miss Cackle. According to legend, completing them undoes any spells cast on that day. The Three Challenges A second riddle or grid
If Mildred fails to complete the challenges by dusk, the transformation spell becomes permanent, and her old self will be gone forever.
Involves navigating a complex stone template or grid found in an abandoned tower room.