To get on a ship to Antarctica, Kimari and Shirase will first need the money to fly from Japan to Fremantle, Australia. To earn this money, Kimari gets a job at a convenience store, where she meets a girl named Hinata Miyake. Hinata decides to join them on the trip, and quickly gets swept up in Shirase's next plan...

Ever since her mother was lost in Antarctica, Shirase has felt like she was lost in a terrible dream. Despite her fear of what will happen if nothing changes after she goes, she and her friends now set off on their final journey to the place where her mother was lost.