When Alice, a middle-aged mother and wife, sees a couple having sex in the park, she is embarrassed but walks on and thinks no more of it. Later, however, a policeman knocks on her door, asking her to make a statement about what she saw. The man from the couple is notorious for taking advantage of young girls, and the one from the park was only fifteen. Alice is the only witness. If she gives evidence in court, she might stop the man from hurting more vulnerable adolescents. But by putting herself on the stand, Alice risks exposing her own past ...