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.
She and my mother knew 
each other in high school.
.كانتا هي وأمّي زميلتين في الثّانويّة
Sie …
Mi madre y ella
se conocieron en la preparatoria.
Mi madre y ella
se conocieron en bachillerato.
Cette femme était une amie
de ma mère, au lycée.
Lei e mia mamma si sono conosciute alle superiori.
Ela e minha mãe se conheceram 
quando estavam no ensino médio.
Они с мамой ещё в старшей 
школе познакомились.