The 20th century is just around the corner. In winter, St. Petersburg transforms into a fairytale-like wonderland where frozen rivers and canals bustle with festivity. The city is home to 18-year-old Matvey who works as a delivery boy at a famous local bakery. The son of a poor lamplighter, his only treasure is a pair of silver-plated skates he inherited from his father. Meanwhile, a high-ranking official's daughter Alisa is feeling like a prisoner in her father's mansion. One day their paths cross.
Young Muscovite Kirill is a very talented IT and gaming specialist. His life is perfect: loving parents, good job, girlfriend....Until one day he is erased from everyone’s memory and has no record at all... Kirill finds out that he had been chosen for a very important and secret mission, his purpose is to become a customs officer (a gate keeper) between the parallel worlds, and there are dozens of them in the Universe. Can Kirill solve the puzzle of parallel worlds and find out who is the mastermind behind the mission he is now a crucial part of?