After an alien spore infects the entire Enterprise crew with madness, it seems that the only available action to save the ship from a rapdidly decaying orbit is a cold restart of the engines.

In an outer quadrant of the galaxy, the Enterprise is taken over by Deela and her subject Scalosians, who can accelerate their personal time frames to a point where everyone else seems frozen.

Determined to discover what the Klingons are doing in Federation space, Captain Kirk beams aboard their ship with a security team, just as the stormflares to its highest intensity. As the bridge crew watches in horror, Mauler vanishes from the Enterprise’s viewscrreen. And James T. Kirk awakens . . . one hundred years in the future.

A despondent Captain Pike considers warning two future cadets about the accident that will kill them and maim Pike himself, but before he can write to them, his older self shows up to transport young Pike to the future that the warnings will create.