Spanish origin platformer advertising, designed to promote the brand among consumers gum Cheiw. + K - is the name of the protagonist, a teenager with no expression on his face disfigured by intellect and constantly chewing the cud most. His love for such a dubious product once in handy when the Earth invaded by aliens who have discovered the lethal intolerance to cud Cheiw. This + K has gained the ability to resist the alien aggressors, because for this he just need to inflate the bubble more.