With the Nosferatu Project going smoothly, Private Lev Leps is brought back on to the roster of cosmonaut candidates, relieving him of his duties as vampire Irina's supervisor. From sunup to sundown, he struggles against his talented rivals in hopes of becoming humanity's first cosmonaut. But what of Irina? She endures post-flight tests by moonlight, and the powers that be have other, more sinister plans in store for her...