Of the 43 children born 1 October 1989 with no gestation period, the eccentric and sometimes cruel billionaire Reginald Hargreeves brought up seven of them and turned them into the super-powered group called the Umbrella Academy when they developed powers. Nearly thirty years later, after Hargreeves dies, the five surviving members of the group gather at their family home. Oh, and: Number Six died some time ago and only Number Four can see him; Number Five disappeared about seventeen years ago, but he’s back (and in his 13-year-old body) after living 45 years in a post-apocalyptic future that’s scheduled to start in eight days.

Five’s plan for the Umbrella siblings to escape the apocalypse by going into the past ends up scattering them throughout different years of Dallas in the 1960s. They manage okay on their own until shortly after 11/22/63, when secondary effects from changes to the timeline cause a nuclear holocaust that can be averted only by recently arrived Five jumping back to 11/15/63 to exert his unique charm into getting the gang to work together.

After stopping the JFK-induced apocalypse in Season 2, the six Umbrella siblings return to 2019 where they no longer exist and their still-living father has founded The Sparrow Academy in their stead.