Events in India's history - from the Emergency and the famous Cricket World Cup win to the Punjab riots , unfold from the perspective of an innocent Sikh man Laal Singh Chaddha, a person with a low IQ but high optimism. Laal is able to achieve everything under the sun but his childhood love continues to elude him.

Aamir Khanas Laal Singh Chaddha
Kareena Kapoor Khanas Rupa D'Souza
Naga Chaitanya Akkinenias Balaraju Bodi
Mona Singhas Gurpreet Kaur (Laal's mother)
Manav Vijas Mohammad bhai
Kamini Kaushalas Old lady on train
Rohaan Singhas Aman Chaddha