The Fine Line

Zarah is a young , beautiful , stunning girl who resort to drugs when her sister , Saira, shuts the world out after their mother's death . Their relationship crumbles down as years pass and until one day Saira commits suicide on Zarah's 16th birthday. All Zarah has left is her dad and Saira's Best friend , Diya.
Diya runs out on Zarah and it takes a huge toll on her. Her addiction becomes graver rapidly . Until one day Diya comes back to save the only person that linked her to Saira...
Fate comes into play when Diya tries hard to help Zarah and in midst of struggles they find themselves with the reason for Saira's suicide.
All they have is a few bruised memories and a riddle to find out the truth which may help Zarah to find closure.