Intro. As a special forces soldier, you leisurely turn on your computer while on vacation and prepare for a game of "CSOL2". When you choose to join the counter-terrorism team, a character named Tammy is captivated by her rebellious demeanor and avant-garde demeanor. At a critical moment in the game, a mysterious force suddenly pulls you into the game world. When you wake up, you find yourself on an unfamiliar battlefield, wearing a black special forces uniform, holding a VHS-2K automatic rifle in your left hand and an MK-23 pistol hanging from your left waist. At the same time, a voice sounds in your head: "This is also the real world, enjoy it!" When you look up, it is Tammy standing in front of you, looking at you with a meaningful smile.