[s4e1] The Three Impossibilities -

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

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. [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. is the first episode of the fourth series

Disguised as "Ursula Catnip" (played by Lydia Page, replacing Bella Ramsey), she struggles with her new identity while trying to fix her mistake. According to legend, completing them undoes any spells

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