Buy One, Take One (1988)

Salve and Sion is a sister living with their grandparents. Trying to make ends meet, they take in any job even if it's not high paying. Ben is a long-time friend/ admirer of Sion. He supports her in her every endeavor. When Ben's cousin, Carding arrives to Ben's place, he meets Salve and is easily smitten by her charm, when he rescues her from trouble. One day both sisters come face-to-face with criminals, they try to run away from them and report to authorities.