Mika has been the mistress of a certain wealthy man for nearly five years. Following his preferences, she spends her days indulging in SM play, but gradually begins to exhibit qualities of a submissive woman. Around this time, she meets and becomes intimate with a man named Kato. Kato skillfully grasps Mika's sexual proclivities and makes her addicted with his superior techniques, then proposes marriage. Mika is over the moon, dreaming of a rosy future with Kato, and eventually, without any suspicion, hands over all her savings and a large amount of borrowed money to him.
