I'm not sure specifically as I haven't read it. But generally, a 'third wheel' in a story might be someone who feels left out in a relationship or social situation. So perhaps this novel is about that character fighting back against their 'third wheel' status in some way.
I'm not exactly sure as I haven't read this specific novel. But generally, it might be about a character who has been a third wheel in some relationships and decides to take a stand or change the situation.
Sure. Once, my friend and his girlfriend were having a date at the park. I tagged along as the third wheel. They were being all lovey - dovey, and when they started to feed each other ice cream, I made a big show of being super jealous and tried to steal the ice cream. It made them laugh so hard.
I don't know exactly who the main characters are in 'the third wheel strikes back novel'. However, we can make some educated guesses. There would likely be the protagonist who is the third wheel. Then, there could be the people who are in the relationship or the social group that the third wheel is trying to break into or change their perception within. Maybe there's a best friend of the third wheel as well who plays a role in their journey to strike back.
The main character is Greg Heffley. His family members like his parents and his brothers also play important roles in the story. And of course, his friends at school are main characters too as they are part of his daily experiences.
The main plot is about Greg Heffley's experiences in middle school. He has to deal with all kinds of typical middle - school problems, like friendship and family issues. In 'The Third Wheel' story, there are also events related to school dances and trying to fit in with his peers.