When a raging virus tears apart the world's order, a nobody with a baby bottle turns the tables of fate with a sharp tongue and a syringe. Lin Xiaobei was just an obscure street vendor selling fried rice until a mysterious “Medical System” crashed into his head one midnight. From then on, with a scalpel in his left hand and a minigun in his right, he became the most outrageous medic in China's Seventh Special Operations Bureau, call sign: Baby Bottle.
When he first entered the battlefield, he was either performing CPR on enemies or criticizing his teammates' tactical blunders. He saved high-ranking officials with diagnostic X-ray vision and steadied morale with his deadpan jokes. But when “Berserk Syndrome” victims came charging like beasts, missions failed, comrades lay dying, and his energy ran out, his skills began to go on cooldown, and even his wisecracks stopped working.
The turning point came during a deep-sea rescue. He discovered that an even darker experimental conspiracy lay behind the virus, and that he was nothing more than a living piece on a chessboard. To reboot his System, he had no choice but to accept an energy crystal from Aisha, a Middle Eastern princess. The price was a burden of unknown risks and a crisis of trust.
In this age where technology and madness coexist, he's a comedian and a god of war, a doctor and a soldier. But as the world teeters on the brink of collapse and he faces a choice: save people or kill the enemy? Love one person or save all of humanity? Can humanity still hold on to its final line of defense?