In an emotional crisis, Hamid decides to splash acid on her lover's face. Looking for the acid in Tehran, he realizes that there is a large underground organization in the heart of Tehran that sells any type of acid illegally. Hamid decides to buy the strongest acid from them, but this decision costs him a lot.
Federal agent Alexandra Barnes believes that Catherine Petersen is a serial killer who marries rich men and then murders them for their money. But since Catherine is seemingly a master of disguise and has multiple identities, Alexandra can't prove anything with conventional detective work. With no other option, she goes undercover, pursuing the same man as Catherine, and hoping that Catherine will slip up and reveal her true identity.
