The construction engineer Chavdar comes to Sofia design organization from a large construction site. He is already author of unique technical design. He is not willing to compromise in his work. The director gives an uncompleted design for discussion, and knowing the principle of Chavdar his superior tried to put the two men against each other in order to discredit the director. Chavdar falls in love with Elena. His best friend is also in love with her. Chavdar must resolve this complicated personal and social issue.