The Swans Vs. The Dark Curtain

A dark curtain fell on the city, sweeping across it as if intent on destroying everything. The curtain was made of tiny insects that chewed everything in their sight.

Suddenly, an opening appeared in the curtain, and the blue sky shone beyond it. I asked my companion what was happening and was told "those are swans eating the insects". Swans flew back and forth, attacking the infestation.

A house made of glass doors flew towards the swans. The house's doors and windows were automatic; they trapped a few of the swans. I got close to the glass doors and prised them open, freeing the swans. Unfortunately, one of the swans had its leg chopped off. She (this swan was an old lady) looked at me, then at her leg stuck to the automatic glass door. She smiled a thank you and flew away.