Agents of Shield Season 2
The first portion of the season deals with two separate parties trying to get their hands on an 0-8-4 (object of unknown origin). They are so called because their purposes are unknown and deemed possible threats to humanity and so are placed in a storage facility known as The Fridge. Agents are led into believing that dangerous weapons are jettisoned into space from rockets from a facility known as The Slingshot but it is only a ruse- Fury keeps each and every one for study and experimentation.
One of these parties is Daniel Whitehall- a German Nazi who has retained his age (late 40s) into the present day when he should easily be dead. Since the second World War, Whitehall, going by Reinhardt, had been after the Obelisk (the 0-8-4), but not knowing what it really was capable of. Thwarted by Peggy Carter, Reinhardt was imprisoned for life until the time Hydra overthrew S.H.I.E.L.D. and regained his youthfulness. To achieve his goal on obtaining the Obelisk, Whitehall has Sunil Bakshi assist him who brainwashes people into being loyal to Hydra including Carl Creel aka Abosrbing Man and Agent Kara Palamas.
The other party is Cal Johnson- father of Skye whose true name is revealed to be Daisy Johnson. It is revealed that Raina has been working for him to obtain the Obelisk which she does and brings it to him but also failed in bringing the other thing Cal wanted more- Skye. He deems Raina’s life forfeit because of this and when she pleads for his help for protection against Whitehall who threatens to kill her unless she return what she stole from Creel, Cal coldly refuses to give her the Obelisk. Instead, Cal approaches Whitehall directly, with the Obelisk, under the philosophy “the enemy of my enemy is my friend” which in this case his true enemy according to him is S.H.I.E.L.D because he thinks they took his “Daisy” when she was a baby. While hoping to kill Coulson personally, he also desires to kill Whitehall who does not realize Cal is the husband of an important woman he murdered.
That woman is Jiaying- mother of Skye and an Inhuman, and the woman who Whitehall operated on in order to obtain her immortality. Inhumans began as an offshoot of humans during prehistoric times when the Kree first came to Earth and experimented on humans, enhancing them for the purpose of creating an army the Kree could use to combat against other alien races. Jiaying’s specific ability is immortality but at the cost of absorbing the life force from others.
When Coulson discovered that the visions in his head were blueprints for an ancient underground Kree city in San Juan, Puerto Rico, he races there against Whitehall and kills him. By this point, Whitehall had been told by Cal that the Obelisk (it’s true name being the Diviner) is supposed to be taken inside the Kree city, activated and opened, and unveil Terrigen crystals which release the Terrigen mist. This in turn causes everyone in the vicinity to turn into stone and if anyone has the Inhuman gene within them, they go through a transformation known as Terrigenesis. Those who do not, are by terrible misfortune shattered into pieces as was the case with Agent Antoine Triplett. In Skye’s and Raina’s cases however, they gained the abilities to manipulate vibrations and precognition respectively (https://www.youtube.com/watch?v=4xzn8BE4LLo).
Daisy and Raina took sanctuary at Afterlife for a time, an Inhuman safe haven in China under direction of Jiaying. There, Skye met other Inhumans like Gordon who lost his eyes but gained the ability to teleport anywhere in the world and Lincoln Campbell who creates and manifests electric charges. After the fall of S.H.I.E.L.D. by Hydra, another faction of S.H.I.E.L.D existed led by Robert Gonzales. Gonzales had Agents Bobbi Morse and Al Mackenzie spy on Coulson’s faction and report back, one of the reports being Daisy’s newfound Inhuman abilities. Declaring Daisy a potential threat, Coulson convinces Gonzales to meet with Jiaying and come to an understanding which he does on peaceful and honest terms, declaring that if any Inhumans pose a threat to humanity, S.H.I.E.L.D will take action. Jiaying murders Gonzales intending to start a war. After murdering Raina and attempting to murder Daisy for standing in the way of her plans to thin out humans, Cal is forced to kill her but not before Coulson helps him see that Jiaying is the true monster.
At the end of the season, Jemma is studying a monolith said to be Kree by Jiaying and which she feared above anything else. During the season, Gordon had tried to teleport it out to get it out of S.H.I.E.L.D’s possession who, because of Jiaying’s indoctrinations, the Inhumans believed planned to use it as a weapon against them. Not even knowing what it does themselves, Jemma is sucked into it and disappears…..