The Story of Kalki Avatar
In KALKI Avatar, Lord Vishnu will incarnate himself as KALKI, the machine-man, who will come riding his white horse and with his blazing sword in his hands. This is supposed to be a future avatar of Lord Vishnu. At the end of Kali Yuga (present eon) He will punish all evil doers in this world, destroy this world and recreate a golden age again.
KALKI is the last of the avatars of Lord Vishnu.