Unfortunately, I can hardly remember anything from that movie. The only thing I remember is that a boy and a girl travel in space, probably with some other company. Maybe at some point towards the end, the boy dies and resurrects again (I'm not sure). The characteristic of this movie is the appearance of some giant, snail-like creatures (somehow it reminds me the aliens in the beginning of "Fifth Element").
I know the information is nothing but if this rings any bells to anyone please let me know. I'm struggling over a year now...