After thousands of years, the planet, Earth has suffered from water level's dramatic rising. It is believed that the abundance of available nuclear weapons is the most possible for responsible for such result.
In order to make sure that the Abyssals won't make use of such situation to turn the table. Admiral and Purifiers has launch an early reconnaissance against any potential threats.
This time, Talandar and Tokitsukaze will have the mission with the new modification.
May wish a good luck for them.