Aditya 360

In 1991, Prof. Ramdas is a scientist who does vigorous experiments to invent the time machine at his home laboratory. Even after tremendous efforts, the machine does not seem to work. Meanwhile, Raja Verma, a high-profile thief has a peculiar hobby of burglary of antique pieces from the world's museums. His henchmen steal a 16th-century diamond, belonging to the period of the Vijayanagara empire from the Salar Jung Museum. The robbery is witnessed by Kishore, a school kid who is trapped in the museum on his school excursion. He manages to escape from the robbers and gets rescued by Krishna Kumar. However, no one believes Kishore, and the diamond is replaced by its duplicate in the museum.

Kishore gets to know that Prof. Ramdas is working on the time machine through his daughter Hema. One night, he along with other kids set it off in an attempt to go the day of the robbery. Hema and her fiancé Krishna Kumar rescue them but get accidentally trapped in the machine. The time machine takes off and visits the past, to the reign of the emperor Krishnadevaraya of the Vijayanagara empire in the year 1526.

There, Krishna Kumar saves Simhanandini, a dancer in the royal court of Krishnadevaraya from an attempted raid, and she introduces them to the Emporer. Krishna Kumar surprises Krishnadevaraya by reciting the poem of his court's poet Tenali Ramakrishna before it's even written and explains to him that they have come from the future. Though Krishnadevaraya finds it hard to believe, he nevertheless offers them hospitality. A police constable who also happens to be trapped in the machine joins them. Later one night, they catch the sight of the stolen diamond which is then in the possession of Krishnadevaraya. The emperor tells that when moonlight on the night of Karthika Punnami falls on the diamond, it radiates seven colors of the rainbow. Fascinated by it, they stay back to witness the event. It is also prophesied that the diamond would be stolen twice, once in the emperor's reign and again after 500 years.

Later, Simhanandini who lusts on Krishna Kumar accuses him of cheating on her. However, Krishna Kumar is deemed innocent after a trial. To seek revenge, Simhanandini conspires with Senadhipathi to frame Krishna Kumar in the diamond's robbery. Upon witnessing the diamond in Krishna Kumar's hand in a tussle with Senadhipathi, Krishnadevaraya sentences him to death. Though on the day of the execution, Krishnadevaraya who believes Krishna Kumar's innocence saves him. This is later confirmed to him by Ramakrishna who witnesses the diamond being robbed by Senadhipathi. Krishna Kumar, Hema, and the constable escape and board the time machine which sets off again.

The machine takes them to the year 2504, a dystopian world destroyed by radiation after the end of the Third World War. Scientists of that era who already know about their arrival, receive them. In this era, the entire city is built in the underground and is powered by Krishnadevaraya's diamond. During their stay, they also watch the news from the year 1991. It reports that the diamond is retrieved from Raja Verma with the efforts of Krishna Kumar but he is killed in the process. The malfunctioning time machine is now repaired and when the environment begins to negatively affect them, they leave. The time machine brings them back to the present.

Raja Verma, who kidnaps Prof. Ramdas and Kishore to get hold of the time machine locates it abandoned on a hilltop. Krishna Kumar rescues them and combats with Raja Verma in the time machine. It is destroyed in the feud and both are reported dead. But Krishna Kumar who jumps off the cliff moments before it explodes is saved and joins his family.