A group of characters, often a mix of heroes and villains, are trapped by some form of Applied Phlebotinum inside the world of literature, video games or the like, but most often, television. Either they must learn to cope with their newfound environment until some way can be found to escape, or they will jump from channel to channel, hitting a multitude of clichéd worlds and thin parodies.
A [...] [tvtropes.org]