One day, large-scale monsters appeared all over the world, and at the same time, 'dimensional users' awakened. The government began to train students who could use dimensional and called this 'Tactical School'. As the commander of the Tactical School, you must train students and work hard to resolve the monster situation. * Protect the city from the incoming monsters. * Train students with different characteristics and win the battle. * Create the best squad through various party combinations.