Captures everything from The Original StarTrek side of the game... Primarily it is a placeholder for sub-categories, so this category itself should be fairly empty...
The storylines, the events, and the arena challenges are always from one series at a time. The TOS storyline has 5 chapters, with the final scene being tos-5-7. When a TOS event is in progress then only TOS characters and starships can be used to play it. However, arena challenges are usually available in sets of two: a TOS arena and a TNG arena so you should be able to play fully in one of the challenges.
This category has the following 3 subcategories, out of 3 total.