[s4e1] The Three Impossibilities -

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

is the first episode of the fourth series (season) of the 2017 TV adaptation of The Worst Witch . It originally aired on CBBC in January 2020. Story Overview

This final challenge is originally unreadable and ruined on the stone wall, forcing Mildred to use her ingenuity to figure it out before time runs out. Key Characters & Plot Points [S4E1] The Three Impossibilities

A second riddle or grid that the girls must solve quickly.

Involves navigating a complex stone template or grid found in an abandoned tower room. Disguised as "Ursula Catnip" (played by Lydia Page,

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. Story Overview This final challenge is originally unreadable

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.