Two characters are each doing their thing, whether that's saving the world or just trying not to get fired. For some reason, it turns out that neither can succeed if the other fails. However, the dramatic element is that they can't just cooperate and get both tasks done. It has to be done discreetly, so one or both has to help the other secretly in order to achieve their own goal. Compare Beleaguered Assistant. Examples of Success Symbiosis include: