I find that I get my best inspirations from thinking up crazy situations. Remove the scene, context, and even the antagonist and protagonist. All you need to grow an excellent plot is a seed, and that seed is an odd relationship or an subtle irony at play.
For example, take a situation where a man in power takes everything a woman owns, and while the woman despises him, she comes to love him because his reasons for doing so were noble. The man could be a prince who at first comes across as arrogant, pays a visit to a woman whose husband hasn't returned from the war and fears the worst in order to collect anything that can be used in the war effort. The woman lashes out at him for taking advantage of her helplessness and is met with laughter by the prince and his men, and the prince likes the spark in her and decides to "take" her too. She responds by unsheathing daggers and promptly killing several of his men, but is overpowered. The prince spares her life, but insists she come to help the war effort and the woman, having no choice, obliges.
On the journey home, they get ambushed by ogre mercenaries who are a part of the larger orc army approaching the capital and so the adventure ensues. Along the way, you discover that the odds are really bad regarding the upcoming battle, and that the prince was merely trying to save his homeland. She develops an awkward and stubborn attitude towards the prince, who to her surprise has grown fond of her company. She too is surprised that she has grown fond of the prince, but will never admit it...
All this plot developed from the seed of a "a man in power takes everything a woman owns, and despite it all, she loves him." Then, you can weave in other such seeds which support your current storyline, while growing story and/or character background such as an elf who, despite being an expert in current events and in the know, is helplessly naive and trusts people too easily (who matter-of-factly bumps into the prince and the woman and they can't drive him off and later realize how much they need his expertise). Another example would be an Ogre who comes from a tribe which fights for peace, and claims to be against the war effort, though betrayal of his actions, is revealed to care little for anything other than gold. Imagine how they would interact with each other in certain situations..
If two characters distrust each other, imagine a scenario that would force them to cooperate.