Definition: In this task, five ordered key facts are given. All the given facts are expressed in natural language. Your job is to generate a story 100 to 1000 words long, that includes all the facts given as input in their order of appearance while expanding upon them to produce a broader, yet coherent, narrative.
Input: Fact1: doctor invents drug to dead, Fact2: side effects makes recipient at same time, Fact3: city is flooded with murders, Fact4: cop is on trail of Ajay, Fact5: Ganesh kill Ajay in to put end to rampage

20 years into the future 2008 in Chennai, India, a doctor Jaishankar invents a drug which gives back life to the dead if injected within two hours of death. He works along with two other doctors Jai Ganesh and Thakkali Srinivasan. They experiment on the dead body of an orphan Ajay Rathnam and succeed. Unbeknownst to them, the drug induces side effects which makes the recipient immortal and at the same time alters the mental behavior of the recipient to a murdering maniac. Ajay Rathnam goes on a killing spree and the city is soon flooded with murders. But Ajay doesnt hurt the doctors as he trusts them, and returns to them every time he is wounded by bullets fired by the police. A cop Prabhu starts investigating these crimes and is soon on the trail of Ajay and the doctors after suspecting their research work. When Jai Ganesh and Thakkali Srinivasan suggest to Jaishankar that they kill Ajay in order to put an end to the rampage, Ajay overhears it and later tracks down Thakkali Srinivasan, his wife Jayashree and Jai Ganesh, and kills them all. Later he kills Jaishankar as well. Prabhu and his girlfriend Amala finally track down Ajay and after some intense bloodshed and fight, they roll him off a cliff in their car. Even after getting burnt, he comes back alive and attacks them. Finally Prabhu throws him into a deep watery pit, seemingly killing him, and leaves the place along with Amala. However, Ajay comes out from the pit, having survived.