This first series focuses on the mysterious Walter, who invites ten[a] of his friends to an idyllic house in the countryside, only for them to witness the end of the world and be told they are not allowed to leave.

[3][4][5] The enigmatic Walter invites ten[a] of his close friends and acquaintances to spend a week at an opulent lake house, initially believed to be in Wisconsin.

Walter reveals that he is part of an alien species who intend to destroy the Earth and study the ten humans inside the house.

The group then starts to see their idyllic existence as a gilded cage, and resolve to uncover the truth about Walter and the house – and maybe even save what's left of the world.

The second "cycle" follows Max, another enigmatic figure who has handpicked a group to live in a beautiful house in a Mediterranean setting after the end of the world.