Iroha remembers that her wish was to cure her younger sister, Ui’s, illness; however, there is no sign of Ui’s existence in her life. She goes to Kamihama City to find clues about her, but is attacked by a Witch and subsequently saved by a trio of Magical Girls, Momoko, Rena, and Kaede. There is a rumor going around about the Friendship Ending Staircase at Rena and Kaede’s school. Momoko and the others believe that a Witch is involved in the rumor, so they’ve been investigating it, but…
They'll be trapped inside the Friendship Ending Staircase
and forced to clean an endless staircase!
Tendrá que limpiar las escaleras
de la ruptura para siempre.
Tendrá que limpiar las escaleras
de la ruptura para siempre.
Elle sera enfermée dans l’escalier
Verrà intrappolata all'interno della Scalinata dell'Amicizia 
Infranta e costretta a pulirla all'infinito!
Vai ser trancada dentro da Escada do Fim da
Amizade e forçada a limpar uma escada sem fim!