Ep 22. Lost in the Flood

Oliver and Felicity's attempt to stop the threat unleashed by Damien Darhk takes a heartbreaking turn. With Diggle on the sidelines for the mission, Thea and Laurel join Oliver and Felicity in their latest mission to prevent Genesis from being activated. After several close calls, Felicity and Oliver finally get close to disabling the device, but a freak occurrence causes Laurel to get seriously injured.

Meanwhile, Malcolm Merlyn arrives at Darhk's underground lair to find Thea waiting for him. Though he plans to keep her captive in order to draw out Oliver, Thea has other plans and enlists Malcolm's help in destroying the device. Elsewhere, Nyssa Al Ghul breaks into the lair to confront her sister, Talia, about their father's death but is instead faced with a dark surprise.

As the team struggles to cope with Laurel's condition, they must also face the threat of Darhk's hive mind, which he plans to use to control the city's population. Oliver and Felicity race against time to stop Darhk before he unleashes his final attack and destroys the city once and for all.

In the end, the team must come together to face the biggest threat Star City has ever encountered. With their backs against the wall, they must find a way to stop Darhk's plan and save the city from destruction. But when all seems lost, an unlikely hero emerges, and the team must learn to trust him in order to win the battle.