A brand-new battlefield awaits! Old frenemies become staunch allies as the strongest team in the history of Gun Gale is born! This time, LPFM, named for Llenn, Pitohui, Fukaziroh, and M, will enter the third Squad Jam and overcome fierce competition as they aim for ultimate victory! But with a map that's slowly sinking into the sea, an "unknown" area at its center, and a "special rule" that won't come into effect until the competition nears its end, this Squad Jam is proving to be one big mystery after another...