Ever since Michael lost his hand on Nikita, there's been talk about him getting it back. In that sense, "Tipping Point" is way overdue. Yet while it accomplishes some things we've been waiting for, it also telegraphs the rest of its punches.
The episode opens with Michael making nice with an office building receptionist in order to steal her keycard so that he can steal a hard drive. Nikita is amused by his tactics, and he explains to her that he's been chasing after former Division psuedo-mad scientist Heidecker, who's now in Cincinnati. Could whatever Heidecker's working on now help Michael get a new hand? He and Nikita decide to find out.
Meanwhile, someone else is doing some hacking of her own - inside Division to help an unidentified figure get into the server room. Clearly she's still upset about last week. She feigns being concerned about when she goes with Ryan and Sean to check out the situation later. It's a pretty big deal. "You could cripple key systems, erase files," a startled Sonya warns them, so Ryan enlists Alex and Sean to find out who's responsible for the intrusion.
Michael and Nikita realize that they've been lured to Cincinnati by someone pretending to be Heidecker. The mysterious person instructs Michael to open a nearby case, and inside is a bio-prosthetic hand, which they call a "gift" for mending the relationship between their two organizations. "We don't have a relationship," Nikita says, to which the enigma replies, "We do now."
They take the hand back to Division, where they receive another message from their new friend, who says they'll perform the surgery necessary to attach it to Michael if they retrieve something for the other organization from a lab in China. Birkhoff balks, but Michael is interested, because he admits to Nikita that he's still in pain and hates his new-old job running operations. He wants to be back in the field, which is exactly where we want him, too.
Downstairs, Sean and Alex brief Ryan on the intrusion, and Ryan is convinced it's a sign of "organized dissent. A mutiny. I was afraid something like this would happen when you told everybody about Danforth." He goes on to explain that if enough people join up and go rogue, the situation would hit a tipping point and unintentionally cause the destruction of Division, hence the title of the episode. Cut to a few random Division agents talking about how to get rid of their trackers.
As if Ryan's day isn't bad enough, he hears from Nikita, Michael and Birkhoff about what they're up to. (He also lets slip that Owen is assigned to Danforth surveillance duty.) After he reluctantly approves a volunteer-only mission, everyone heads to China, with Nikita creating a diversion while Michael and his friend Jason break into the lab. Unfortunately, her diversion fails after a few minutes, causing Nikita to have to spring into action and trigger a full-scale security alert. Jason gets shot and eventually dies, since he's the expendable one.