15-year-old Lera Arabova lives with her family in the city of Vladivostok. Lera's father has been working on the space station "Mira" for many years now and has lost any relationship he had with his daughter a long time ago, being now just a voice in a cell phone. After the city is leveled by the comet's fragments, Lera has only one chance left to save her loved ones and whole Vladivostok from another disaster. Lera's father guides her through satellite systems and phones, monitoring her every move from above.