This movie started great, and had a lot of potential. The lead cast being beautifully brown was great, and very refreshing. I love time-travel stories a lot, and the throwback to 'Back to the Future' was awesome. But... that ending was poop. I get that she (probably) sacrificed her life, to save her best friend and brother, but... "Butterfly Effect" already did that. I didn't necessarily want/expect a happy ending, but I feel like the writer(s) could've been more original with the ending. And also, they just cut it off. So we're just left assuming, rather than knowing for sure. Maybe she died? Maybe she fixed it? Who knows? I, personally, did not like the ending at all. The rest of the movie was really good, though. Good timing, no slow moments, good acting, etc... just fell off at the end, in my opinion.