The series is about a secret service that tracks illegal time travel. Despite the prohibitions of the special services, driven by ambition, the scientist Stern puts his program "time machines" on the Internet. Just a couple of hours later, the link is deleted. But it has already been downloaded by tens of millions of people! Now every inhabitant of the Earth has it, and it threatens a real catastrophe! To save the planet from chaos, a special secret service for monitoring the inviolability of time space, the "Time Boundary," was created around the world. Including in Russia. The best operatives and analysts of the country have been selected for the special forces. Any violations are monitored and severely punished. All operations are strictly classified. In order to find the criminal, the task force will have to go after him. And it's not that simple: it's deadly to arouse suspicion in the past.