The Hunger Games

Another artist's drawing of Katniss and Peeta.
Katniss, Peeta, and Cato are the last three tributes left. Katniss and Peeta head towards where they think Cato is- at the point where the Games had begun. When they find Cato is running away from a pack of genetically altered wolves, all three of them quickly climb the giant cornucopia. Cato attempts to strangle Peeta, but Katniss shoots him with an arrow and he falls to the ground. She catches Peeta before he falls as well. The wolves finish off Cato. 

An announcer quickly changes the previous rules, saying that only one tribute can win now, probably to provide a dramatic ending to the Games.  Katniss and Peeta don't want to kill each other, so they get some poisonous berries and agree to eat them at the same time. They are quickly stopped and announced the winners of the Games.