Plot synopsis: A Yeşilçam adaptation of the episode "Mark of Cain" ("In the Name of Friendship") from the beloved 1970s television series Petrocelli. Selçuk Ünver plays a very strict public prosecutor. Woe betide any defendant he believes to be guilty. He would even arrest his own wife if necessary! He is that principled. He loves Nevin perhaps even more than Petrocelli loved Maggie. Their dog 'Şirin' is the joy of the house. A visit will disrupt this happiness.