Shenanigans

The term “shenanigans” is used in reference to devious, manipulative, or mischievous activity. Sometimes the word shenanigans is used to describe silly and relatively unimportant impish activity and sometimes it is used to describe very serious and inappropriate plots or scheming activity.

Example:

Let’s see what kind of shenanigans go on at the next convention. Someone is always up to something at conventions.