The action begins in 2305, two years after the end of the Second Wave. General Lev Slutsky suddenly arrives at an outpost half-abandoned in the mountains of Zailiysky Alatau, and a stormy life begins for the garrison. Campaigns, training, attacks of creatures and the creation of the Petrel group. Sudden love, raging creatures, revenge and intrigues of Leo. The Burevestnik group and Lev Slutsky discover that they are alive and are in some underground laboratory in the western Alps. But there is no time to solve riddles, because the Third Wave has been raging at the top for 30 years, and the creatures are preparing to seize the capital of the Federation. And in order to realize the second chance presented by fate, Leo and the heroes will have to work hard.