A ship fires on Enterprise. Four longhaired, very tan hippies beam aboard, and take out a red-stripe before he can call for help. They run all over the ship and have fun climbing Jeffries tubes. Aw, they're adorable little killers! Hoshi reports the boarding and triangulates the infiltrators' current location. Quantum orders the tube sealed off and the Uh-Ohs deployed. The tan hippies speak Klingon as they run around accessing things and firing at Uh-Ohs. They have a chat with their ship, telling them where to fire. The attacking ship fires again. Quantum wants the attacking ship disabled. The tan hippies return to the transport sight. You know, I don't care what Worf says -- with their leather jerkins, red stockings, high boots, and hair styles, they all look exactly like Robin Hood's Merry Men. Uh-Ohs try to stop the Merry Men but ultimately don't. One Merry Man falls. I think it's Little John. The attacking ship activates their transporter and goes to warp. Enterprise can't pursue because the helm isn't responding.
Sickbay. Little John is strapped to a bed. Quantum strides in and barks, "Wake him up!" Hoshi and T'Pol follow the captain into Sickbay. Little John is hyposprayed awake and struggles to break free. "Why did you attack us?" Quantum demands. "Jibber-jabber!" says Little John. "I have nothing to say to you, human," Hoshi translates. Quantum furrows wonderingly around: "That sounds like --" "Klingon," Hoshi finishes. T'Pol boggles that Little John's bio-signature shows him to be Klingon. Quantum stares down at Little John, thinking, "But his forehead...so smooth...I've gotta get the name of his facialist!" By the by, this Klingons aren't nearly as shiny black-faced as the ones in TOS. I mean, really -- if you're going to waste two episodes explaining a makeup deviation, you might as well get the makeup right.
Situation Room. Reed insists that Little John must have been surgically altered to look human. T'Pol reports they won't be warp-ready for about six hours. Quantum orders May-Darling-Buds-Of to help their "new engineer" get the most out of their engines. Quantum asks after the freighter's black box. "It was erased," T'Pol says. "It might've been a safeguard," Reed puts in quickly, "in case it fell into the wrong hands." Quantum orders T'Pol to work with Hoshi to reconstruct any recoverable data, and leaves Reed to stand around looking suspicious.