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…
This is why
you don't have any friends in class.
Por eso no haces amigos en clase.
Por eso no haces amigos en clase.
C’est pour ça que tu n’as pas
d’amies en classe, Rena !
È proprio per questo che a scuola 
non ti sei fatta nessun amico!
É por isso que não consegue
fazer amigas na sua sala!