The plot revolves around a train named Super Express that catches fire on its inaugural run from New Delhi to Mumbai.

Kailash Sharma is found guilty of sexually molesting Shanno and killing Dheeraj Kumar Verma, and sentenced to be hanged by the Jammu & Kashmir Sessions Court. After his appeals at both High and Supreme Courts fail, he asks his wife, Seema, to take their daughter, Pinky, and re-locate elsewhere. Seema and Pinky re-locate to Bombay where she takes up sewing to make a living. She befriends their neighbor, Ratan, and both get married. 14 years later Pinky has grown up and has a boyfriend, Vikram, who she wants to marry. Meanwhile, Kailash, who is still alive as his sentence was changed to life imprisonment, arrives in Bombay to look for his family. After sometime he does find them but decides not to interfere in their lives as they appear to be happy. But when Seema finds out she goes to meet him secretly - a visit that will set off a chain of events that will end up drastically changing their lives forever.

Bollywood action comedy film with a lost and found theme, about three brothers separated during their childhood who grew up in three homes, adopting three religions. They meet in their youth to fight a common villain. It was the biggest blockbuster of 1977, and won several awards at 25th Filmfare Awards including Best Actor, Best Music Director and Best Editing.