In the movie "I am legend" what is will smith running from?

I've been punished for the past month and i'm punished this month also. I was just curious what I am legend is about. I know he's the last guy on earth but in the trailers, what is he running from?

Do the people eventually come back??? like what's the climax of the story??

he isn't the last person alive, there is a safe colony in new jersey with people, he is running from these things called night seekers, thy were once human, but a lady invented a cure for cancer but it turned them into these mutant humans, they can only come out at night because UV rays from the sun burn their skin, the climax is when the night seekers finally break into his house and him and 2 other humans that he found run down to his lab and hide in a super thick glass chamber, but the ring leader starts ramming the glass and the 2 other humans go into this chamber but he can't go because he has to save them

-SPOILERSPOILERSPOILERSPOILER-
-SPOILERSPOILERSPOILERSPOILER-
-SPOILERSPOILERSPOILERSPOILER-
this gives the end away!!!
he found that he cured one of the night seekers he kept in that glass cage thing and take it's blood and gives it to the humans in the chamber, then he gets a grenade and blows the whole place up just as the night seeker breaks the glass, the two humans get out and drive to a safe zone in new jersey where there are some people that haven't been infected and they give them the blood from the cured night seeker
then it ends
IF YOU MADE IT HERE, YOU KNOW THE END SO DONT GET MAD AT ME!!!!!

He is not the last person on earth. People who say he is are incorrect. Go watch the film.

Will Smith is running from Vampired like mutants.


Thumbs down me all you want. I know what I am talking about. Ive watched the film twice now.

vampire-like mutants that surived, but were affected by the man-made virus that the film revolves around and wiped out the rest of the world's population.

vampires
he is the last human on earth. his blood is immune to the viris and they want it. thats why he can only go out durin the day. if the movie stays true to the book thats it.

vampires

Light allergic, mutated, zombie-like, creatures called Dark Seekers. They resemble Voldemort, that bald-headed old wizard from J.K Rowling's imagination, and they're adrenal glands tend to be always opened. They are infected by the KV virus(aka Krypton Virus), and they were former humans, until they were infected and turned into beings that thrive only in the darkness, and when Will Smith was trying to fid his dog, he's lured to the darkness, where he is forced to flee from these diabolical lunatics that will devour everything, or either else infect. Beware.FYI, the trailer told us that he is the last MAN(emphasized) on Earth. Later on in the story, he meets a WOMAN( feminine,not similar to man) and a BOY(not yet a man.)

a diseased has plagued the entire world and he seems to be immune to it so for 3 years he lives alone in new york and suddenly some of the infected people start going after him.

Light allergic, mutated, zombie-like, creatures called Dark Seekers. They resemble Voldemort, that bald-headed old wizard from J.K Rowling's imagination, and they're adrenal glands tend to be always opened. They are infected by the KV virus(aka Krypton Virus), and they were former humans, until they were infected and turned into beings that thrive only in the darkness, and when Will Smith was trying to fid his dog, he's lured to the darkness, where he is forced to flee from these diabolical lunatics that will devour everything, or either else infect. Beware.FYI, the trailer told us that he is the last man on earth technically he finds a women and a boy.