On November 23, 1957, the Federal Republic of Zirnitra stunned the world by successfully launching a dog into space, escalating the space race against their rival, the United Kingdom of Arnack. Both countries are determined to be the first to send a human into space.
Because of the physiological differences between dogs and humans, testing space travel on subjects more similar to people is essential. To achieve this, Zirnitra decides to conduct experiments on vampires, whose biology closely resembles that of humans.
Irina Luminesk, a vampire from the mountains, is forcibly brought in but accepts her role as a test subject without resistance. Lev Leps, who was once a leading candidate to become the first human cosmonaut, is assigned to train Irina. As they train together, both Irina and Lev grow increasingly passionate about space exploration, which also brings them closer.