Kimari wanted to have a great adventure in high school: In her second year, she meets Kobuchizawa Shirase, a girl who is determined to go to Antarctica and Kimari is so moved by her indomitable spirit that she vows to go with her.

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 Miyake Hinata.

The girls agree to go to Antarctica with a young actress who does not want to go alone.

Kimari and the others need to go on a three-day summer training camp to learn the skills they'll need: they experience everything from lectures to field work and meet the team commander, who seems to have a history with Shirase.

It's been several months since their training, and the girls' trip to Antarctica is drawing near. With Rin's help, Kimari manages to sort out her luggage, and in doing so, finds a game she borrowed a long time ago.

The girls have a stopover in Singapore on their way to Fremantle and they decide to spend their time sightseeing, but Yuzuki notices Hinata acting strangely.