While the Avengers join forces with a cosmic armada to repel the Builders; Thanos takes advantage of their absence to lay siege on Earth.
We learn that the tribute that Thanos has been after in every star system is the head of every living being that is in the age range of 16 to 22. The Cull Obsidians which is Thanos’s generals, makes an appearance in the Inhuman kingdom of Attilan demanding the same tribute. However, the reason behind the motive is unknown. That is until Black Bolt summons the Illuminati into a enchanted space that allowed the great king to speak.
Black Bolt reveals to the Illuminati that Thanos has a son whom he has plans to kill, and he’s located somewhere on earth.