The main plot points could start with the circumstances that force Anko to become Naruto's servant. It might involve some political intrigue or a personal debt she owes to Naruto. Once she is in the role, there could be a series of plot points focused on her internal struggle. She is a proud and strong - willed character, so adapting to being a servant would be difficult. Meanwhile, Naruto might be trying to gain the trust and respect of Anko. As the story progresses, they could face external threats that require their combined skills to overcome. This could lead to a change in their relationship dynamic and be a major plot point as well.
In this fanfiction, a significant plot point might be the initial encounter that leads to Anko becoming Naruto's servant. It could be a result of a bet, a mission gone wrong, or some kind of magical event. Then, as Anko starts her new role, there could be plot points around her learning to follow Naruto's orders while still maintaining her own personality. Also, the fanfic could explore how Naruto and Anko work together to overcome challenges like fighting powerful enemies or solving mysteries in the ninja world. Additionally, the reactions of their friends and foes to this relationship would also be important plot points.