The play Pericles has its roots in the romantic tradition. It deals with loss and gain.
Pericles entrusts his daughter, Marina, into the care of Cleon and Dionyza. Unfortunately they prove to be unworthy of this trust. Because of their actions, Marina is forced to literally flee for her life.
She finds herself in a brothel where her innocence and purity ironically saves her and her father, who has sunk into a deep depression as a result of the lies told him by Cleon and Dionyza.
Without the duplicity of these two characters, the play would not be very interesting or have one of the most wonderful reconciliation scenes in literature.