My Antonia is a modernist novel about the coming of age. Modernism is a style of writing used from the late 19th century till the 1930s. Modernism is a style that has no central plot instead it is more of a series of episodes. Please take note that most teachers ask for a specific plot where this novel doesn't really have one. My advice here would be to talk about the aging of the main characters or Jim's attraction to Antonia as a main plot. Also take note that both Jim Burden and Antonia can be considered Protagonists. I hope this helps as I've spent so much time on the internet trying to find this for my project on the novel.