The Bin's Big Freeze is an SWS Mission released around Christmas in 2014. It has been in the Binscape every year since then. As of 18th December 2017, it's in its fourth year
The WEB have snuck into Bing's Cabin and have frozen the bin with his Snowtron 5000, causing many problems. A news report has stated that the Bin was to become colder over the week. The SWS have sent their best agent to go to Bing's Winter Wonderland to foil the WEB's plot.
When completed, you receive the Snowtron 5000 mentioned in the mission and a Giant Christmas Tree that can be placed in your Nest, which are only available for tycoons, and a trophy, which is available for everyone.