u/Bulky-Army6400

Hey size community! I’m currently working on a story which entails a character of great size and a character of small size having to work together. However, I do have one issue. I’m not sure what the setting should be, nor the motivations and goals of the characters. Does anyone have any ideas, I’m aiming for the giant to be roughly 70ft tall and the smaller person to be 5’5. I am also unsure what type of fiction it should be based on, fantasy seems like the best but that would require lots of effort for world building as I want it to be unique. What I’m mainly asking is what do you think the characters should be trying to accomplish together and what should their dynamic be?