In an accident, the Seven Shrek Monsters were forced to lose their memories and get involved in a new continent without soul power, where they would possess the person who best matched their soul and change their appearance to their own. That person's previous memories and abilities will be inherited.
They lost their memories here and reunited without knowing each other. "There is a traitor among us, who is it?" "Why is it you!" "So what if it's me, so what if it's not me?"
They are either friends who advance and retreat together, or they are new enemies. So who is the friend and who is the enemy?
Intention: a sudden whim