A wealthy businessman, Sanjay Singhania, falls in love with an ad film actress, Kalpana. His life is shattered when Ghajini kills her and leaves him with short-term memory loss. Two years later, Sanjay is driven by a desire for revenge, using notes, photos, and tattoos to help him remember and exact his revenge on Ghajini.

Ghajini
A person with a rare condition that erases their memory daily seeks revenge against those responsible for the death of a loved one, but struggles to maintain momentum as their daily efforts are repeatedly forgotten.