Khap, a contemporary tale of traditional massacre opens in the capital where two youths Ria and Kush fall in love. Meanwhile news channels highlight the death of Veer and Surili,who are found dead in Omkar Chaudhary's village. Ria has no idea that Omkar is her grandfather. Madhur, Ria's father,had left his native village due to differences with Omkar over the ruthless pratha (tradition) of honour killings, Madhur is chosen to lead a commission to investigate the suspicious deaths of young Veer and Surili. Torn between his love for his son and his strong belief in the pratha, Omkar promises Madhur that he would put an end to these ruthless killings.