Guardians of the Galaxy, Volume 2
The Guardians recover a set of batteries in a battle with a monster. When they are returned to the leaders of Sovereign, one of the older civilizations of the universe, it is revealed the Guardians and another small group of Ravagers, led by Stakar (Arnold Schwarzenegger) and Yondu, have been competing back and forth to find these batteries scattered across the cosmos for substantial bounty rewards.
Sovereign, fearing the whispers across the cosmos about Thanos’ atrocities (with the Black Order shown in footage on TV), have been working on building a weapon called Warlock, fueled by these batteries. Ayesha calls the two groups together and explains these rival groups will have to work together for final piece of their mission. The last hoard of batteries they need to complete the project are being held by a notorious thief named Ego. Through their reactions, it is clear Stakar and Yondu have a history with Ego. Reluctantly, the Guardians and Ravagers work together to find Ego. As “incentive,” the Sovereign hand over a captured Nebula to the Guardians.
Yondu tells Peter they had been partners in the past, but Ego was unreliable and treacherous. However as they work their way through his lair, the Guardians and Ravagers get separated. Ego reveals himself to the Guardians and gives them a counter-offer. Ego says he has learned from a source that Sovereign, fiercely isolationist, has no intention of using Warlock to defend the rest of the galaxy from Thanos. He proposes the Guardians help him steal the batteries from Sovereign and the plans for Warlock and get them to Xandar to actually do some good against Thanos. Obviously the Guardians are hesitant to agree to this, but Ego turns on the charm and appeals to each of them directly. For Rocket and Groot, Ego says the payoff in selling the batteries and plans to Xandar will double their current profits. For Drax, Ego says something like Warlock in the hands of the Nova Corp will help protect the innocents of the Galaxy and prevent Thanos from killing more families like Drax’s. For Gamora and Nebula (who had been arguing with each other up to this point), it’s a chance to stick it to Thanos. Peter is the only one on the edge, at which point Ego drops: “Peter, I’m your father.” Also, Ego is sick, and his cut of the loot will be a share of the batteries which he believes can cure him. The Ravagers show up, and in a snap decision, Peter and the Guardians open fire on them, escaping the planet and throwing their lot in with Ego. In the fight, Yondu has a clear shot at Peter, but he doesn’t take it. Instead, he warns Peter not to trust Ego before leaving.
The Guardians piece together a plan to steal the batteries back from their former employers. Peter shares with Gamora a story about how he always claimed his father was David Hasselhoff and got into fights with kids who challenged him about where his dad was. Gamora encourages him to give Ego a chance. Peter confronts his father with questions about how he could have left Peter and his mother behind on a planet that would soon be destroyed by a massive war. Ego admits he was afraid. He is a thief and a con-artist, and he truly loved Peter’s mother, but he wasn’t ready to leave his life behind. The idea of Peter coming along scared him, along with all of the responsibility of being a father, and he ran from it. But he’s older now, he’s changed, and he wants to be a part of his son’s life before it’s too late. Peter starts to cry. He’s already lost one parent, and just having found this new one, he doesn’t want to lose him too. At this point, Ego confides to Peter something he can’t tell the rest of the crew: he doesn’t just need some of the batteries, he needs all of them if he wants to be cured. It means keeping this secret from the other Guardians, and eventually screwing them over, but Peter now loves his father and keeps quiet. If something happens in the heist, Ego gives Peter coordinates to rendezvous. By now, the Ravagers have made their way back to Sovereign and are preparing for the inevitable attempted theft of the batteries by the Guardians. Stakar scolds Yondu for letting Peter go, telling him Yondu needs to get his priorities sorted out.
The plans come together, and the Guardians pull off the heist from Sovereign's vaults, with the Ravagers in hot pursuit. Peter and Ego are holding onto the loot and making their way towards their ship, with the Guardians following and giving covering fire. Peter and Ego load the loot onboard, and Ego tells Peter, “You can come with me.” Peter, not fully understanding, says he has to go out and rescue his friends first. Ego hesitates, looking back at Peter, but as he leaves the doors to the ship close behind him. He tells Peter "Earth wasn't destroyed" and then takes off, leaving the Guardians stranded. What follows is an intense firefight through the streets of Sovereign, with the Ravagers leading local forces and starting to corner the wildly outgunned Guardians. They hole up in a cafe to make a last stand. Stakar and Yondu get the jump on Peter, and Stakar is about to kill him when Yondu incapacitates Stakar. Yondu tells Peter the full story, that he’d taken in Peter as a favor to Ego, but when he arrived at the spot to make the trade, Ego never showed up. Pitying Peter and unwilling to just dump him, Yondu raised Peter as his own. When Peter asks about Ego’s illness, Yondu looks confused for a moment, then sad, telling Peter there is no illness: it's just another one of Ego’s cons. The only truth about Ego is that he is Peter's father. Yondu tells the Guardians that the Ravagers’ ship is nearby, and the group makes a break for it and steals their ship. They escape exhausted, injured, and on the run with no loot to show for it.
When Peter explains his full side of the story, the Guardians are angered, not only that he let their loot go, but that he didn’t trust them enough to tell them. Peter gets defensive, saying that he has rendezvous coordinates to go to in case they got separated, and saying they don’t know what went down with his father. Rocket points out the obvious, that Peter is in denial. Peter gets angry and turns to the other Guardians for support, but finds that they agree with Rocket. Gamora even brings up the Hasselhoff story, which just makes Peter angrier. A big part of him still believes in his dad, even in the face of the logic and the arguments from his friends. The group sees the trip as a waste of time. The group is on the verge of splitting, but when Peter storms off, it’s Drax who follows him. Yondu talks to the others. In contrast to Ego’s smooth talking, Yondu is honest and direct with them even when he stumbles over the wording. Drax, meanwhile, talks to Peter about his own family. He says that sometimes when he goes to sleep, he talks to her (which is tough for a very literal Drax to explain). When he wakes up in the morning, he reaches for his wife on the other side of the bed. He’ll panic for a moment when he can’t find her, only to remember that she is dead. He tells Peter that he thinks Peter is being fanciful, but that he would never take that dream, that possibility, of having a family away from someone. As much as it hurts, those few moments in the mornings when he thinks his wife is still there are the best parts of his day. When the two of them go back into the other room, the Guardians say they will go with Peter to the rendezvous site.
When they show up, no one is there. Peter is heartbroken, but in a homage to the end of The Life Aquatic, the shot zooms out on the other Guardians putting their hands on Peter, set to Cat Stevens’ “Father and Son”.
In a post credits scene, Thanos talks to the Black Order. "Your sisters refuse to join us," Ebony Maw says. “Fine,” Thanos replies, picking up the Infinity Gauntlet, “We'll do it without them."