The plot seems to revolve around a group of marines participating in a military exercise. During this exercise, they are transported by a submarine behind enemy lines. However, due to a miscalculation, instead of landing in a military zone, they end up at a girls' boarding school.
The girls at the boarding school discover the presence of the marines and force them under blackmail to participate in one of their plays. This suggests that the marines may have to collaborate with the girls or take part in a theatrical performance organised by the female students.
This unusual and out-of-the-ordinary situation could generate a series of comical and embarrassing situations as the marines try to manage their presence in a completely different environment from the military and the girls try to get something out of the soldiers through blackmail. It will be interesting to see how the story develops and how the characters deal with this unexpected situation.