Squad Jam is a battle royale that pits teams against each other. LLENN, a female player clad in pink, has teamed up with M, a burly man and talented sniper. At the beginning of the tournament, LLENN scouts ahead, but then an enemy team closes in…

The second Squad Jam is about to take place. This time, Karen’s friend Miyu Shinohara will participate as well. She converts her character from another VRMMORPG and starts Gun Gale Online as Fukaziroh. LLENN takes her to go buy weapons...

The second Squad Jam has begun. LLENN and Fukaziroh’s starting point is the most northwestern area on the map. LLENN looks for Pitohui and M, but their location is far, far away. LLENN and Fukaziroh begin their advance towards Pito’s team, PM4.

Three months after LLENN won second place in the team battle, “Second Squad Jam” (SJ2), “Third Squad Jam” (SJ3), was announced. Soon after, news broke out that Pitohui, M, Fukaziroh, and LLENN formed “LPFM,” considered the strongest team in the game. Clarence is obsessed with LLENN, and Shirley ignites her fighting spirit to kill Pitohui. All members of SHINC hope to take revenge as they lost to LLENN in SJ1. A heated battle surpassing SJ2 is about to begin…!

Clarence and Shirley defeat and destroy the allied team. KKHC is wiped out after the two kill each other in a fierce battle. Meanwhile, LPFM rides a truck inside a freight car and calmly heads over to UNKNOWN as if going through a deserted field.

The organizing team of the game announced a shocking, special rule to be implemented. One “betrayer” will be selected from the six remaining teams to form a new team. Pitohui is selected from LPFM, and the team leader of SHINC, Eva, also joins. With this new rule implemented, Pitohui is happy that she can fight against LLENN. Eva gracefully leaves her team, hoping to fight against LLENN, too. All of the "betrayers" meet up on a luxury cruise ship set up in UNKNOWN, forming a most intimidating team named "BTRY"!

LLENN and her comrades head to the center of the island, where they find the luxury cruise ship. As the island continues to sink, they must get on board. However, they can’t carelessly approach the vessel as BTRY awaits them onboard.

LLENN decides to participate in the game to battle Eva of SHINC with all her might. To clear the game, a player must destroy all seven NPCs or take back the gas bombs they stole. LLENN and LPFM members head to the location where the enemy awaits. They encounter SHINC along the way. As they're about to attack, ZEMAL attacks them first. ZEMAL's attack proved too much as their "backpack style ammunition carriage system" allowed them to fire rapidly without any breaks, leaving LLENN and LPFM clueless on how to counterattack.