Akshay (Kumar Gaurav) is a youngster whose sister has been missing for a long time. Akshay often wanders around on streets looking for her. One day he meets and befriends a girl (Anamika Pal) who helps him to search his sister with him. The movie traces their search, and the twists that their own lives take during this search.
Aaj is about Anjali Bakshi, an independent nature, head-strong daughter of a rich industrialist, who leaves no stone unturned to see her happy always! Arun Bakshi is not very pleased to see his daughter enjoy her job of Rs. 600/- a month as a reporter with News of India. At the local police station where she goes to investigate, Anjali meets Akshay, a young boy, dim in the head, looking for his missing, elder sister, Kavita. This young man is not capable of doing anything except deliver flowers for a florist.