To say that DC's Legends of Tomorrow was an ambitious series for CW is an understatement. The first season was considered having such a large budget that they couldn't afford a Season 2, but it will be happening. It is clear that the events of the Season 1 Finale will affect Season 2, and events at the end of Season 2 of The Flash will affect Season 3 of that show. Then there could be a ripple effect on Arrow and even Supergirl.
In case you missed the finale of DC's Legends of Tomorrow, Captain Cold destroyed the Oculus, and this is supposed to be the end of the Time Masters and the policing of the timeline. Now that the team has defeated the big bad immortal villain of Vandal Savage, there is going to be some new plotline going on for Season 2.
There will be a ripple effect that will affect all the timeline, and there will be a lot of repercussions in Season 2. In the season finale, a second Waverider time ship appeared and Hourman stepped out, revealing that the Time Masters brainwashed Mick Rory and sent him back in time as the supervillain Chronos, and there is some kind of impending threat in 2016. Unless the Legends got back on The Waverider, they would all die, and this is the next mission.
According to iDigitalTimes, executive producer Marc Guggenheim says: "Like Rip says at the end of the season finale, there basically are no more Time Masters. We basically have to be the Time Masters."
For those that missed it, the Legends lost Hawkman, Hawkgirl, and Captain Cold. There has been three replacements that include Hourman, Citizen Steel, and Vixen.
As fans of another DC CW show The Flash know that Barry Allen went back in time to save his mother. There is no way that is going to not affect what is going on with DC's Legends of Tomorrow, even though it may or may not be affected by the "Flashpoint" scenario, which might be similar to the big plotline from the comics. Grant Gustin, who plays Barry, has said that the Season 3 Episode 1 of The Flash titled "Flashpoint" will not be like the comic.
It would make sense for the timeline to be completely rebooted with all the events that have happened, and chances are, this will affect what is happening on Arrow as well. Of course, a recent questioning of star Stephen Amell revealed that he only might have known about that.
Still, the disrupted timeline will allow a lot of interesting events to happen, like removing plot elements that have gone bad, or inserting elements that should have been in there for the first place. Considering that Supergirl is coming to the CW, she really needs to be a part of the Arrow-verse that is established on these shows like Arrow, The Flash, and now DC Legends of Tomorrow.
According to Cinemablend, DC's Legends of Tomorrow will be returning on Thursday, October 13. If you want to wait and binge-watch it after it is over, then there is a new deal going on with Netflix that will allow for watching eight days after the season finale.