The action of the "spy novel" takes place in the spring of 1941. An Abwehr agent under the code name Vasser is abandoned in Moscow. The task of the German spy: in any way to convince the Soviet leadership that all the information about the German attack on the USSR in the summer of 1941 is a provocation of the British secret services. The most unfortunate thing is that this agent succeeds in almost everything - he even personally meets with Stalin himself and in a conversation privately informs him of "strictly secret information" that if Hitler Germany decides to attack the Soviet Union, this will happen no earlier than 1943 of the year. Soviet intelligence is trying in every possible way to expose and detain the enemy spy, but will it succeed? ..
