PT 1 > FLASH:
SEASON 3 (2016)
Flash encounters an alien ship, from which spring hordes of Dominators
intent on conquering Earth.
PT 2 > ARROW:
SEASON 5 (2016)
The Dominators capture Green Arrow and the Legends, and mind-probe
them on board their ship.
PT 3 > LEGENDS
OF TOMORROW: SEASON 2 (2016)
The final free-for-all, as the Legends, team Flash, Supergirl and
Green Arrow take on the Dominators.