The theme of the jam is Going Undercover.
The protagonist must be attempting to pass as someone they are not in order to achieve their objective.
For example, they could be a detective trying to infiltrate the mafia, a con artist trying to run a scam, etc.
The undercover operation must be the main driver of the plot and source of conflict, instrumental in achieving whatever goal they are trying to achieve, not just something that happens in one part. The character must be intentionally trying to fool someone or a group of people, not just mistaken for someone else or confused about their own identity.
Have fun with the jam!