Given a premise, an initial context, an original ending, and a counterfactual context, the task is to generate a new story ending aligned with the counterfactual context and as close to the original ending as possible. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context and the story's general plot. The original ending is the last three sentences of the story. Also, a counterfactual context is a slight modification to the initial context. You should write a new story ending that edits the original story ending as little as possible to regain coherence with the counterfactual context. To sum up, you should write the last three sentences of a story based on the premise(first sentence) and the counterfactual context(second sentence) of the story.

Premise: I put a small plastic spider in my brother's tea as a prank. 
 Initial Context: The following day, he put the spider in my underwear drawer. 
 Original Ending: I decided I needed really serious revenge. I put the plastic spider just inside the shower before he got in. To my horror, he screamed and slipped, breaking his collarbone! 
 Counterfactual Context: My brother decided to be the bigger man and not prank me back.
I decided I needed really life changes. I put the plastic spider in the trash. To my surprise, I saw it later when my brother changed his mind and pranked me! 