The intro part would make an excellent beginning for some explorer horror - the FF VII Wasteland theme fits it incredibly. Can you imagine the tension of roaming that murky desert while desperately craving that something would happen?
Unfortunately the rest of the movie fares worse. Who in the Universe sets on a discovery voyage with the possibility of annihilating an entire planet just because of a cringy nightmare?
Also the meeting on Earth seems too contrived. A rascally guy has dreams of a sad girl and suddenly said girl crash-lands right next to him. It wouldn't be so bat if it didn't happen in like every other anime.