Ema and Maika who came to the depths of the mountain to find unpolished jewel accidentally meet with Sakuya and Kaguya. With the guidance of the mysterious stone found there, will the four of them be setting up new Friends!?

In order to convince Alicia, Aine and Mio go to Sorbet Kingdom along with Hibiki. "Time difference?" "Passport?" What is the secret item to survive in Sorbet Kingdom, a snowy country? Because of the first time of Aine go to overseas, she begin preparing in slapstick!