While trying to decipher The Monitor’s mission, Oliver returns to Starling City where he encounters familiar faces. Meanwhile, Mia and William’s team clash with a new foe.

Oliver, John, Laurel and Tatsu seek out an important person within The Monitor’s plan. Connor has a heart to heart with his brother.

Reunited with his sister, Oliver and Thea find themselves searching through a familiar maze of catacombs. Meanwhile, John and Lyla partner on a special ops mission.

When a mysterious new Deathstroke appears in Star City, Oliver and Team Arrow insist on taking down this villain themselves. Meanwhile reeling from the loss of one of their own, the future Team Arrow figures out a new way to try and stop JJ.

Upon learning the key to oppose The Monitor, Oliver and team return to Russia on a mission to gather the necessary materials. Connor reunites with a figure from his past.

After being double-crossed by Lyla, Oliver finds himself facing a life or death situation that seems very familiar. Laurel has the opportunity to make amends with the past.

Oliver's mission takes him to Lian Yu where he tries to ignore the repercussions of the looming Crisis until he receives help from an old friend. Meanwhile, a united Team Arrow faces a recognisable villain.

This crossover begins on Supergirl S5E09, Batwoman S1E09, and The Flash S6E09 and concludes on Legends of Tomorrow's special episode.

The episode will serve as a backdoor pilot for a potential spin-off series titled Green Arrow and the Canaries, starring Katherine McNamara, Katie Cassidy, and Juliana Harkavy.

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