After Malick and the Russian dignitary escape the disruption at the international council on Inhumans, they land in Siberia to establish the Inhumans' new Sanctuary State. Unknown to them, Bobbi and Hunter have stowed away on their plane and are close behind them with S.H.I.E.L.D. back-up on the way. Once regrouped with Mack, May, and Daisy, the team infiltrates a secret soviet installation to discover what Malick is up to.
With S.H.I.E.L.D. listening in, Malick discusses his plans with the Russian dignitary, Anton Petrov, and the problems he is facing trying to secure the sanctuary. He believes that creating a safe place for the Inhumans within Russia's borders will be beneficial to his country, but, as with everything, politics is currently getting in the way. The Russian Prime Minister is blocking the proposal to go against his political rivals. Things get more politically awkward when a general in the Minister's own cabinet is an Inhuman himself (the first Inhuman politician, with access to nuclear launch codes...) and is easily angered, using his powers to easily kill those who cross him. Malick convinces Petrov to allow the Inhuman general to be let loose against the Prime Minister, who is on his way to the installation as they speak. S.H.I.E.L.D. rushes in to intervene, allowing Malick to escape in order to prevent the assassination of the Russian Prime Minister. While Mack and Daisy deal with the General's shadow form (his ability being to separate and control his shadow to kill and is invulnerable), Hunter protects the Prime Minister, and Bobbi assassinates the General, ending his shadowy powers, and getting both of them arrested.
Woven in between scenes of the action at the Russian installation are interrogations of Bobbi and Hunter by an Interpol agent, who is trying to get to the bottom of what happened and discover who the fingers should be pointing at. Bobbi and Hunter never break under questioning, sticking to their story as a couple on vacation in Siberia for mushroom picking. Coulson and President Ellis do what they can to appease the Prime Minister, but he's too stubborn and worries about the implications of members of his cabinet being murdered and the idea of an assassination attempt from within. Coulson forms a plan to get Bobbi and Hunter out and into hiding, but they decide otherwise to stand up for their friends. If Bobbi and Hunter were revealed to be active S.H.I.E.L.D. agents, all of the Inhuman trained cats that they've been hiding will be let out of the bag and relations between the U.S., Russia, and the rest of the world, will become even more strained. Bobbi and Hunter won't allow that, and choose to be the shield and take the hit, disavowing and exiling themselves from the intelligence community.
While "Parting Shot" goes into the politics of this new world full of powered individuals, and shows where S.H.I.E.L.D. stands between them in the shadows, the biggest impact is losing Bobbi and Hunter. Since they were introduced in the second season, they've grown and bonded with the original cast, now being seamless from originals to new cast. I can't help but feel there will be a definite feel of loss going forward, just as with Trip. But, for Bobbi and Hunter, it's not really goodbye, is it?
The spin-off focusing on Bobbi and Hunter, Marvel's Most Wanted, has been green lit and is going forward, but there isn't must information available about it just yet. Given the events of this episode and what we know about Bobbi and Hunter, I get the feeling that the show will have a very Mr. and Mrs. Smith feel to it. Personally, I think a third secret agent show for Marvel Television is starting to push it, but, I felt the same way about Agent Carter and have since seen the strength it brings to the MCU, so, hopefully, Marvel's Most Wanted will bring something new and exciting to the MCU.