After a mysterious gas attack which kills off most of the Earth's population, a few survivors gather at a country inn to figure out a plan for survival. However, the gas attack is only the first step in an alien invasion, in which groups of killer robots stalk the streets, able to kill anyone with the a mere touch of their hands. The group's members find additional weaponry in a nearby drill hall, but the robots continue their campaign of terror, which only increases when their victims rise from the dead as zombies, eager to kill anyone who might try to stop them.So we've got poison gas followed by killer robots followed by zombies? Please. Why not add some triffids and a handful of sharknados to go along with it? I mean, if you're going to go over the top, why stop with only three Armageddon events?
Extra-credit question: OK, you zombie apocalypse survival types, survive that! Leave your plan to cope with the gaseous, robotic zombies or whatever the things are in the comments.