This improv game is in the following improv game categories:
whenever a character leaves the scene, the audience may yell "follow the leaver". At this point all characters remaining on stage disappear, and the story continues with the character who just left the scene, and a totally different story line is allowed to develop. Characters from the previous scene do not appear in this next scene and the players may play different characters (except for the "leaver'). This continues until one of the characters leaves and the audience yells "follow the leaver".
Typically characters from older scenes do not return, though this is not a rule set in stone; the format really allows sequential story lines that do not connect later on.
See also Slacker .