The series is a parody of Neon Genesis Evangelion, in which the entire cast of the original series are now everyday students going to junior high school together at Tokyo-3. The series features three "Rei sisters": one is a child younger than the rest based on "Rei 1", the second is based on "Rei 2" (the Rei seen for most of the normal series), and the third Rei is actually based on the hyperactive and klutzy "Alternate Rei" (the Rei seen in the alternate-reality dream sequence from the final episode of the original series). Additionally, Evangelion Unit-01 itself is one of their classmates, but thistime as a human-sized robot.

This show was an absolute masterpiece of a parody, all the characters were nothing short of hilarious, truly an incredible masterpiece work of art that will forever go down in anime history. This show IS deeper than real eva lore, actually, this IS the eva that anno intended. Hideaki Anno created this as his real vision, but, if this is not the real eva, it does not matter. It is the real eva in my heart. This is the greatest eva timeline, and no other eva timeline can compare to the ingenuity that is Eva Petit.