Two insects help a caterpillar begin her metamorphosis. They try several strategies and finally manage to get her into the cocoon. Once she's in the cocoon, they use more creative strategies to provide the environment she needs to morph into a beautiful butterfly.
Billy is replaced by "Bobby" after having a falling out with Mandy. While initially behaving like Billy, Bobby reveals himself to be a malicious usurper of other people's lives. He appears to Billy and threatens to get rid of him forever unless he disappears in 24 hours. Billy comes up with a strategy to get rid of Bobby, instead, and tricks him into getting pushed into an interdimensional portal.
George is dating a pianist. He needs "hand," as she is clearly the alpha member of the pair. Kramer suggests a preemptive breakup. George analyzes—if she accepts the breakup, there's no loss, as she was going to break up with him anyway. If she rejects the breakup, he will have established himself as the alpha member. Therefore, the preemptive breakup is a dominant strategy. It works; he gets a high payoff.