Planning: Improving Initial Ideas

Our initial ideas were very vague and we didn't really have any specific ideas about the plot of our trailer. We have since developed the idea into a story similar to the story of Adam and Eve. A young couple living happily in bliss when suddenly the girl becomes tempted by something she knows is wrong, in our case it is wealth. The boy then is consumed with anger trying to get her back and follows her down the dark path only for them to both emerge back on top, or will they?