Once a group of teens of London has found themselves entrapped in an alien invasion and then they give a sharp fight to defend their block from some extraterrestrials. The group of teens have assaulted by some young thugs when she passes by a South London housing estate on her way back to home and at the same time a rampaging alien has fallen from the stars and has attacked. Sam is one in the midst who is being robbed and the police start assisting Sam, suddenly same time mysterious happenings start there and it has been realized that Sam is going to fight if she wants to live as she has been in the midst of mugging when invasion starts.