[Poggio]

In a basic summery the show is about two bothers who fight any supernatural ghosty ranging from ghouls and vampires to demons and angels. T

A more in depth summery:
he over all story arch for the first season was to find their father and the demon that killed their mother. That sort of extended into the second season I believe. In the 3rd season Sammy gets psych powers and they have to fight the demon that kills his mother. In the 4th season Dean comes back from hell and they agree to help the angels by trying to stop Lilith but Sammy Kills her thus for the 5th season starting the apocalypse. I think thats the best summery I can give with out giving away to much.

@Mew: They did xD the one that Iliked died, also we dont have to worry about sammy any more. Now that we know whats wrong with him -Flails and rants and raves-