As soon as Section K combat agent Sam Darell temporarily became a resident in Tokyo, a catastrophe occurred in northern Japan - a canister with an unknown substance washed up on the shore near the fishing village of Hatashima, its residents are rapidly dying, the disease can break out at any moment villages. According to the description, the virus is very similar to the American secret drug "Pearl-Ku-27", it is not known for sure whether it is this, but the probability is very high. The worst thing is that there is no vaccine developed against it. It is also possible that the Russians or Chinese are involved in all this. In any case, the Japanese islands are facing complete extinction. All hope is only for the Japanese artist Yoko Kamura, she became infected in Hatashima, then they saw that she felt better, and then she disappeared. If Kamura managed to recover, then her antibodies could become the basis for a vaccine.

Darell's task is to find Yoko Kamura. But competitors are also not sitting still. Following on the artist's trail are Po Ping-tao, head of the Peacock section of the Third Bureau of Chinese Intelligence, and KGB Colonel Tsezar Ivanovich Skol.