I didn't watch it all the way through and I kind of just skimmed it, but basically it's just the first bit of the anime. I didn't see anything different. I was hoping it would be a coninuation or something but it's not. It's just one of those lets make a movie by placing all the episodes together and removing the songs and stuff in between. It ends where Kei washes up on shore after the whole research facility thing. I imagine the next two movies will be the same way which basically makes the worthless. Why even bother making them? I don't see the point.