Plugin for events

For a tour club I’m looking for a plugin in which I can easily add an event. Let’s call the event: 15 april, London. I want to have a widget that shows all events in it’s category.(Several widgets for different categories!!) and if you click on an event, you go to a page where you can sign in for the event and say if you come as spectator, player or referee. Anyone knows if such a plugin exists?