Kyubey promised that humanity would reach the stars one day. The Incubator tactfully refrained from saying too much about what they would find there.

Falling their mutual demise at each other's hands, Kyoko and Sayaka wake up in a strange world. Now, with Kyoko's soul gem missing and Sayaka's humanity and personality only partially restored, they must band together to survive.

It's the first day of spring, and Cirno and her friends are once again up to no good! But after stealing a strange box from Marisa's house, they soon find themselves over their heads as they discover some things are meant to remain locked up.