After decades of war, the nations of the world have entered a stage of peace, however, the tensions between them have not ceased.
And after a few years, different groups of spies have been conformed to maintain control of the information. Klaus is one of them, and is considered one of the best, but the time has come for him to prove it with an impossible mission.
His superior tells him that if he achieves his goal, no one will doubt that he is the best spy in history. And Klaus seems to be very motivated by his words.
Meanwhile, at one of the various spy academies, Lily receives orders to immediately join a new group of spies.
After traveling, Lily meets her new team, and it is immediately clear that all the members are considered special cases in their respective academies.
Klaus appears and introduces himself as their new instructor, telling them that they will be prepared to face impossible missions, which usually have only a 10 percent chance of success.
Immediately, the girls begin to speculate, if you think deep about it, they are all interchangeable parts to the system, and that if they die, it is very likely that only Klaus will survive and finish the mission successfully.
The next day, Klaus tries to start his class demonstrating some of the skills they will require for their mission, and in an instant he opens a series of locks, but when Lily and the rest of the spies ask him for more information, he is unable to teach them a clear method.
Later, Lily remembers why she longed to become a spy, and she understands that if everything continues like this, she will not live to help those who need it the most.
She decides to approach Klaus and suggest that they do some kind of team building activity. She and she offers him a series of activities in town, but the next morning, only Klaus and Lily show up.
During the day, Klaus demonstrates that his spy skills are spontaneous, and they both understand that he won’t be able to teach his new students anything.
At a lake, they both decide to get on a boat, and after a few minutes Lily attacks Klaus with a paralyzing poison. At that moment, Lily tells him that she doesn’t want to die in vain, and if Klaus wants to use them as a human shield, he must give up and let them go.
Klaus tells her that it was never his intention, quite the opposite, but perhaps the way he informed them of his goals was wrong.
Lily believes him and takes his word, but when Klaus asks her to supply him with the antidote, she realizes she doesn’t have it with her. Meanwhile, the boat begins to sink, proving that Klaus already knew Lily’s goal, and that he allowed her attack on purpose.
Finally safe, Klaus realizes that he must do something to change the mood of his team. He appears once again before the spies and informs them that they will all have to work hard to survive, and that he does not intend to lose any of them during his mission.
(スパイ教室)