Three university friends adopt Rihanna, but a prank involving drugs leads to her being gang-raped, destroying her life. What will happen next?

Racun Rihanna tells the story of three friends from university days namely Marya, Fateni and Ayumi. They made Rihanna an adopted sister in their lives. But one night, a tragedy happened when three of her adopted sisters accidentally prank-ed her and tricked her with drugs until Rihanna was gang-raped somewhere. Rihanna's dark dream made her life destroyed in an instant. What is the ending?