Set in the bustling streets, Disco Sannya follows Sannya, a clever and fiercely independent street-smart teenager who makes an honest living selling garlands at traffic signals while looking out for his friends. His life takes an unexpected turn after a chance confrontation with an arrogant, wealthy businessman named Shreyas Kale. What begins as a tense clash of worlds leads to an unlikely arrangement, pulling Sannya into the lavish lifestyle and complicated household of the wealthy elite.