Fireflies (2014)

Shiv and Rana, two estranged brothers, are the protagonists of Fireflies. Though Shiv is a wealthy banker and a member of the city's elite, Rana is a law school dropout who scrapes by doing odd jobs to make ends meet. Their lives have been coloured by a long-ago event that has reincarnated to infiltrate their lives once more. All they have are memories, which, like fireflies, shine brightly in the darkest hour, and then... they vanish.