Hi,
Excited to have you jamming with us! There's no specific theme, just the rule that all the game text must be in the form of conversation/communication between characters.
I'm not sure what you mean, but this jam doesn't have a content theme because it focuses on the mandatory dialogue mechanic. Some other Neo-Interactive jams do have content themes, but this one focuses on a game mechanic restraint, so jammers can be as creative as they want with their ideas.
The Neo-Interactives discord server is linked on the jam page! Here it is again: https://discord.gg/NP6c6aAKfK