Vinod Kumar is an upright and honest man, who runs a newspaper named "Mashaal". Vinod exposes the ills in the society with help of his newspaper. Vinod's wife, Sudha, sees a vagabond named Raja and tries to instill some values and culture in him. Vinod is sceptical about this, but accepts when Raja tells them of his tragic childhood and comes to regard Sudha as a maternal figure. Finally, Vinod decides to help Raja by sending him to Bangalore to complete his education and become a journalist. During frequent meetings with Vinod and Sudha, Raja befriends Geeta, an aspiring journalist and an assistant in Vinod's paper, and they fall in love.

During his investigations, Vinod finds that S.K. Vardhan, a wealthy and respected man in the society, is behind many malpractices. Vinod starts exposing S.K's illicit business of drug-trafficking and selling hooch. Initially, S.K. tries to buy Vinod's silence by bribing him, but when Vinod decides to stand up to S.K., the latter inflicts misery on Vinod by having him thrown out of his rented house via the landlord. That very night, Vinod's newspaper office is burnt down by S.K.'s men. Helpless, and on the streets, tragedy strikes Vinod and Sudha further when Sudha, who is ailing, dies on the road, leaving Vinod distraught and heartbroken.

A disillusioned Vinod realizes that S.K. will always trump him, since people also support him. Instead of trying to expose S.K., Vinod now decides to follow S.K's footsteps in order to destroy him. Vinod, in association with Kishorilal, starts to produce illicit hooch and engages in other illegal businesses to earn money – the thing, Vinod retrospectively feels, he lacked, and the shortage of which led to the tragedies in his life. Soon, Vinod becomes rich. Meanwhile, Raja, who is in Bangalore for his studies, is unaware of these developments. The only other person exposed to this truth is Geeta, who has grown resentful of Vinod and has started to work in another newspaper.

Vinod's business now stands as a threat to Vardhan's empire. Soon, Raja returns after completing his education and meets Vinod and is surprised to see that the latter's lifestyle has changed, but doesn't know the truth.

Raja meets Munna, an old friend, from whom he learns that a new crime lord has entered the fray and has gained a foothold in the hooch and drugs world. Raja decides to expose this criminal, who, unbeknownst to him, is Vinod himself. Vinod is disturbed to learn that Raja is trying to dismantle his empire, but does not stop him. Raja starts working for Dinesh, another journalist for whom Geeta also works. A chance discussion between Raja, Dinesh and Geeta leads to the revelation that Vinod is, indeed, the new drug boss. Raja is flummoxed upon learning this, and goes to meet Vinod to confront him about this. Vinod accepts the truth, and tells him what happened. After an emotional upheaval and deep pondering, Raja decides that he will continue on the righteous path Vinod taught him, even if this means exposing the very person, who treated him as his own son, as a criminal. Vinod feels humbled when Raja tells him that he still views Vinod as his mentor, upon which Vinod gives him his blessings to continue his chosen work.

Meanwhile, Vinod and S.K's enmity reaches a head when Raja starts writing about both. Finally, S.K kidnaps Raja and threatens him. Vinod enters and saves Raja, before fighting with S.K. Vinod kills S.K by throwing him in printing press wheels. Keshav, a henchman of S.K, tries to shoot Raja, but Vinod comes in between and gets fatally shot. Keshav is arrested, while Vinod dies in Raja's arms, happy and finally content.

The film was declared 'Flop' by Box Office India for not even being able to recover it's budget, generating only 25 million rupees at the box office despite a budget of 29 million. The film was Dilip Kumar's 1st flop in the year before Kumar's 2nd Duniya.

The film was based on the well-known Marathi play "Ashroonchi Zhali Phule" written by famous Marathi writer playwright Vasant Kanetkar.

A film called "Aansoo Ban Gaye Phool" based on the same, but differently presented, Marathi play was released in 1969 which was directed by Satyen Bose. It starred Ashok Kumar, Debu Mukherji and Pran in key roles.

32nd Filmfare Awards:

Won

• Best Supporting Actor – Anil Kapoor

Nominated

• Best Actor – Dilip Kumar
• Best Story – Javed Akhtar

• Mashaal at IMDb