The Marvel Cinematic Universe is so intricately connected that each of the titles that come out turns up in some other way and for Ant-Man and the Wasp: Quantumania, it opens Phase Five with a huge stage set up for the future of the franchise. Here's what happened with the ending, explained.
Warning: This article contains spoilers for Ant-Man and the Wasp: Quantumania. Read at your own risk!
The Ending of Ant-Man and the Wasp: Quantumania Explained
A quick recap of Ant-Man and the Wasp: Quantumania, Scott and Cassie Lang, Hank Pym, and Hope and Janet Van Dyne, are all sent into the depths of the Quantum Realm to where Janet used to be trapped in for 30 years. All of Janet's nightmares are back and she knows she has to get ahead.
See, Janet already met Kang and the reason why she didn't come home is because she found out about who Kang really is so she ensured that Kang would never get out of the Quantum Realm. He was exiled there for a reason and Janet threw her ticket out to prevent Kang from ever leaving the place.
Through Kang's years there, he built his own citadel and got himself an army. He puts a deal with Scott, kind of a hostage deal, but Scott got what Kang wanted. A villain like him, Kang the Conqueror didn't stick with the deal and he just threw away Scott and Hope like they were nothing.
Everyone contributed, Cassie escaped prison and helped Jentorra get out so they could send a message and call those who can help fight back. Janet ensured that Kang would not escape. Hank Pym is the real deal because his intelligent ants are really those who ended the fight.
Scott held Kang off and destroyed his power core but Hope ended Kang and sent him to his destruction. Yes, Kang is dead, and everybody gets to go home.
Scott talks to himself but his realizes that he might have been the cause of, probably, the end of everyone else. While that seems to be a rhetorical question and even when Scott claims that his life doesn't really make sense, his questions are actually valid and they do make sense.
As they killed Kang in the end of Ant-Man and the Wasp: Quantumania, that paved way to what the mid-credits scene holds -- the Council of Kangs headed by Immortus, Rama-Tut, and Scarlet Centurion, variants of Kang and He Who Remains who gathered all of their kind to pursue something.
This is exactly what Kang the Conqueror stood up against and with him eliminated in the equation, Scott's question really make sense but without everything that happened, the rest of the whole Multiverse Saga would not come into fruition.
Ant-Man and the Wasp: Quantumania just opened the whole door for the rest of the movies and TV shows in the MCU for Phases Five and Six, and without it, whatever comes next could never even happen. Kang may be dead but his variants aren't, the end of the movie is just the beginning of everything.
Ant-Man and the Wasp: Quantumania is now in theaters worldwide.