I can't believe you guys are still in here wishing for flashbacks and info. Anime movies don't work that way. They come up with a plot that will take like an hour and a half to solve and do it. Believe it or not, the directors and companies don't care about us, they just want to cash in on the money.

That Ice Princess thing sounds right up the alley I thought they would go for. Kakashi falls in that battle, but Naruto goes Kyubi and beats the crap out of her.

Stop wishing about Sannin, Yondaime, Kyubi, Lee, Gai, Kakashi, whatever.

Thats not how it works.

DBZ only did something similar to what you are wishing twice. They were both TV Specials. One was Bardock, Father of Goku and the other was the Trunks TV Special that showed him and Gohan in the future.

NONE Of the DBZ MOVIES fit into the regular timeline. The regular timeline was messed up with filler as it is, so thats not saying much. They really milked that manga series into an anime for all it was worth.