Continue the sentence...

 There was an old man sitting under a large tree. I sat down beside him, and he began to talk to himself.
 "This forest used to be fun. Celebrating birthdays with friends and setting off fancy fireworks was our raison d'etre. There were people who didn't like it, and if they found out, they would detain us and purify our abilities. But it was still fun."
 The old man continued.
 "Young people these days are getting smarter. The only time they assert themselves is when they want money. It's very different from our days when it was all about the process."

 I realized for the first time that the rusty chains were wrapped around the old man's feet like snakes, "They won't forgive us for our past when we're too old to move."
 The chain was connected to a red umbrella floating in the sky.
 
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Polar Bear that had his breakfast of non yellow snow, as usual outside, when a odd fellow stuck in a chimney in a house nearby suddenly shouted...
 
"A beer!"
An old man who suddenly shouted at his umbrella. A man in black armor asking for help at the top of the chimney. A polar bear rushes to a man in armor while eating snow. A robot that senses something and starts fighting.
 I was confused.
 "Hey!"
 A voice called out from behind me. I turned around to see a green bear standing there with a menacing look on his face. The only thing I was sure of was that it wasn't as friendly as a polar bear.
 "I'm the one who's keeping an eye on behavior"
 -Behind bear?
 "No, it's behavior. My name is Green Bear.
 -Oh!Clean bear?
 No, it's not clean. Green.
 Are you Special Forces?
 No, I have nothing to do with the Green Beret.