I am Legend

Neville, the last sourvivour in NY. After that a virus that cure cancer failed turning all the people in infected.
Neville lived in Manhattan with his dog Sam. All days went to a port to send a message by radio for some sourvivour.
One day a sourvivour that was following Neville send them 3 infected dogs. Neville killed two of them and the last one bite Sam.
Neville was forced to sacrificed Sam. Later the sourvivour that was following Neville and a group of infected attacked Neville. He was rescued by two sourvivours , Ethan and his mum Ana.

Ana cured Neville and later the infected attacked them. Neville gave his life for rescue Ana and Ethan. Then Ana and Ethan went to Vermont, where there were a sourvivours campament.