Vash: Possessed By The Obsessed is a horror thriller story that revolves around a young recently married couple - Rakshit (Vivek Jaitly) and Aanchal (Ganga Mamgai) who enjoy marital bliss until a turn of events changes their lives. Aanchal suddenly faces the emergence of a relentless spirit that is determined to merge her into his life, no matter the consequences. She finds herself haunted by inexplicable events and disturbing visions that also bothers Rakshit who initially doesn’t believe Aanchal but soon realizes that there’s something serious about it. This leaves the couple with fear and an unwavering determination to find answers.