Binita Kane travels to Bangladesh to discover what happened when her Hindu father Bim had to flee his ancestral village as a young boy. Mandy Duke travels to Calcutta, scene of some of the worst partition violence, to uncover the amazing story of her grandfather Arthur Wise, who filmed there as violence broke out. And Asad Ali Syed and his grandson Sameer, two British Muslims with Pakistani heritage, journey to the Indian town of Ambala, to search for the house where Asad was born before his family were forced to flee to Pakistan.

Anita begins her own partition journey as she and her mother Lucky become the first members of their family to return to what is now Pakistan since the Partition of India. In the Punjabi village where her Sikh grandfather's first family were slaughtered, Anita meets locals who were eyewitnesses to that terrible event.