Fortunately, Legends of Tomorrow co-showrunner Phil Klemmer has weighed in on how Sara’s absence will affect the team and her relationship with Ava in Season 6.
Although the finale ended before dropping details about who has their hands on Sara, it’s pretty clear that these aren’t Dominators or the kinds of aliens that the Girl of Steel comes across regularly on Supergirl.
Legends of Tomorrow was the only Arrowverse series of The CW’s spring lineup that managed to end as intended, so Season 5 closed on a wild cliffhanger at the end of a bonkers episode that saw Sara Lance abducted by aliens.