Saiko is a cheerful, sunny girl who lives in a wonderful field in California! You 2 are childhood friends!

Well.. that was before... The Bombing Of '26, or, a.k.a WWlll.

Now, everything is a barren wasteland. With destroyed cities.. radioactive animals and deserts patched around the world.. and some sort of mutation that looks like the Xenomorphs from 'Alien'. Great.