Last Two Strangers Out Of The World Romance

Two completely different strangers Shelly and Prem woke up in different places to find that except them nothing is left on the planet earth. When they finally met, they both concluded that something unusual is happening to them in the same manner and irrespective of their differences they must support each other to survive. Soon they discovered that the planet they are walking on is not planet earth, but a replica made to test these strangers. Nothing happened to the planet earth yet, but it will soon be destroyed by Aliens.