The crew of Deep Space Nine is preparing for a possible attack by the Dominion. There's a drill to find shapeshifters and the station is retrofitted. Suddenly, the massive Klingon flagship decloaks. It's General Martok and he's not alone. An entire Klingon fleet has been stationed nearby. Sisko welcomes them and Martok claims the fleet is at Deep Space Nine to fight with the Federation against the Dominion. Soon the trouble starts. The Klingons harass Morn, they beat up Garak and try to hijack Kasidy Yates' ship to look for shapeshifters. They continue checking ships outside of Bajoran space after. Sisko doesn't trust this anymore and asks the only Klingon in Starfleet, Worf, to find out what the Klingon fleet is really doing.
Star Trek: Deep Space Nine
Sisko becomes uncomfortable when the Klingons station a task force to help defend against the Dominion. Worf is summoned to find out their true intentions.