The "Legends Of Tomorrow: Invasion!" DC Superheroes 'crossover' event, airs December 1, 2016 on The CW:
"...after learning the 'Dominator' plan for the world, the 'Legends' must work together with 'The Flash' (Grant Gustin), 'Supergirl' (Melissa Benoist) and 'Green Arrow' (Stephen Amell) to kill them once and for all.
"Meanwhile, 'Stein' (Victor Garber) figures out, with the help of others, how the team can terminate the Dominators, but is distracted by the aberration he realizes he created in 1987..."
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