Kimari and the others finally have their tickets to Antarctica. However, they'll need to go on a three-day summer training camp to learn the skills they'll need. In the mountains, 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 from Megumi a long time ago. When she visits her friend to return it and talk about old times, though, Megumi doesn't seem to remember it at all...