Mari, a married mother, receives a phone sex call from her husband who is living apart for work. By chance, her son sees her in the act and becomes sexually drawn to her. Though she knows it's wrong, Mari finds her heart trembling at the way her son looks at her. Even while talking to her husband on the phone, she grows closer to her son. Torn between her duty as a mother and her forbidden emotions, a new relationship begins to blossom.