City On The Edge Of Forever is sort of like a clip show of South Park.Only these flashback clips have some funny changes to them.What basically happens in the episode is the South park kids are going on a field trip.However, the bus crashes and the bus is teetering off the edge of a cliff.Mrs Crabtree the bus driver goes to get help and asks the kids to stay on the bus or else a big scary monster will eat them.She thinks its a lie, but there is a real big black monster which eats Kenny and another kid who does try to get off the bus.While they are on the bus, the kids recall past episodes, like a clip show only there are some differences, such as the inclusion of ice cream in every clip and ending every flashback with the line "Now That's What I Call A Sticky Situation".The changes are hilarious! Meanwhile, Crabtree goes to get help but ends up becoming a famous comedian.Also, the parents of South Park think the kids ran away from home and they all sing a dumb song to get them to come back(it is televised as well).City On The Edge Of Forever is a hilarious semi-clip show episode of South Park.