Pierre Meyrand

Sam and Momo are two disaffected youths making petty theft. They are sentenced to perform community service in the field of music. The idea comes to them then to organize a concert for humanitarian purposes to divert revenues. (Wikipédia)

Bernard finds a tiny water spider in a lake near his house. He puts the spider in a tin box and takes it home, where he grows strangely obsessed with it. Confined to Bernard and his wife Catherine's attic, the spider begins growing larger, and eventually forms itself into a beautiful woman. (thebedlamfiles)