Pramod Joshi is "an unsuccessful criminal" and B. P. Shrivastava "an unsuccessful lawyer". The criminal, a gentle tea vendor, is being tried for the murder of his wife and the barrister- an elderly, disappointed man has received his first case after waiting for 20/25 years. He recalls the long wait for work that never arrived. This would be a tremendous lift. He wants to apply all his knowledge, intelligence and experience to realize his dream of becoming a rich and famous lawyer. But to win the case, he must fight the case, and for that he not only needs the consent, but also needs full co operation from Pramod Joshi. He explains the reasons to his client, who is ready to help, albeit reluctantly.
Thus begins a rehearsal session of examining and cross examining some possible characters required for the case. All this creates a series of events that are both funny and intriguing, at the same time. Although we know that this castle has no foundations we keep guessing if it will see the light of day. What happens after so many rehearsals? Who wins? Could B P realise his dream? What did Pramod get after all? Jail or bail?