The story begins during a routine "Hollow" hunting when Ichigo and Ruika encounter strange spirits know as "Blanks". Initially confused by their sudden appearance, the plot thickens with the appearance of a mysterious new Soul Reaper named Senna who quickly befriends Ichigo. Slowly, the nature of Senna and the strange appearances of the spirits are revealed culminating with Ichigo and gang having to stop a age old feud by a group of Soul Reaper exiles who intend on destroying the world and the Soul society.
Face it, "Bleach: Memories of Nobody" is just an extended filler episode of the popular Bleach anime series. None of the characters get any further development and the cast of new characters do not add much to the soup. Senna especially was no doubt written to be a spunky yet likable girl with a carefree outlook on life, but thanks to either the script or the seiyuu (Japanese voice actress), she comes across as quite an irritant with her "sad" back story feeling forced into place to milk a few tears from the audience. Thankfully the returning cast from the TV series all deliver some adequate performances that fit their character personalities.(note: i have only watched the Japanese version thus far but i hear that the English dub has had much positive reception)
Despite having a movie sized budget, the animation still suffers from the same flaws that plague the TV series. Stiff character motion, flat backgrounds and frequent use of lazy looking animation short-cuts make this movie look even more like a glorified episode of the TV series. There are even a couple of scenes with very obvious "off-model" or disproportionate character art. Along with the overly bright cheery color scheme and minimally detailed artwork, the only "improvement" there is seems to be a greater usage of CGI for some backgrounds and special power effects.
Unless you are an existing fan of Bleach, this movie would fail to satisfy. As if the story were not confusing enough, No introductions or exposition is given hence newcomers would find it really difficult to watch this show and understand the various terms and Bleach lingo. As an anime movie, the production standards are sub-par and the story is plagued by some pacing issues. Top it off with one major cop-out ending(no it was not all a dream, but it is something close to that), and what you get is one major disappointment.
Basically, if you thought the TV series was good, "Bleach: Memories of Nobody" would not change your mind, but neither would it be increasing your impression about Bleach as a whole. If you thought the TV series was not up to expectations, this movie would only prove you right once more as you will find the same flaws here. A real treat for hardcore Bleach fanatics, and a real let down for fans of good anime movies.