After the death of his wife, Damien prepares to destroy the world rather than bear the loss. Oliver turns to an unexpected ally to defeat the black magician.
while Green Arrow and Spartan infiltrate Tevat Noah to find Thea, Felicity and her father work with Curtis to stop HIVE from accessing Rubicon.
As Damien prepares to initiate nuclear armageddon, the team races against the clock to find the one man who can stop the launches: the Calculator.
The Bug-Eyed Bandit hacks the prison computers and engineers an early release for herself... and then goes Felicity and her spinal implant. Meanwhile, Damien adjusts to life in prison and makes contact with an ally.moreless
Oliver prepares to go up against Damien's wife in a debate of mayoral candidates. However, first he has to deal with a team of villainous demolition experts who plan to hit a major target. Meanwhile, Donna has second thoughts about her relationship with Quentin, and Curtis prepares a special engagement gift for Felicity.moreless
Nyssa and Malcolm make war on each other when Malcolm refuses to step down as Ra's to save Thea's life. Meanwhile, Felicity is reunited with her father and he reveals that he's the Calculator... and that he wants a chance to get back into her life.moreless
While Oliver and the team hunt down Damien, Lyla gives Diggle some advice on how to deal with Andy. In the past, Reiter makes a deal with Oliver.
After Damien launches an attack on Oliver and his people at the bay, Oliver retaliates by exposing Damien and HIVE to the public. However, Damien has another trick up his sleeve. Meanwhile, Felicity finds Oliver's engagement ring, and Diggle tries to get the truth from an imprisoned Andy.moreless
Team Arrow launches an attempt to rescue a miniaturized Ray from Damien's stronghold. Meanwhile, Felicity begins to wonder if she's losing herself in her relationship with Oliver, and Donna arrives in Star City to pay her daughter a visit.moreless
While Felicity decides whether she will help an injured Ray with an experimental treatment that could kill him, Oliver and his team go on the run when Quentin issues a warrant for the hero's arrest. Complicating matters, Ra's abducts Quentin as the next stage in his plan to discredit Oliver.moreless
Felicity's mother Donna arrives in Starling City just as a terrorist group calling itself Brother Eye unleashes a wave of cyber-terror on the city. as Felicity struggles to find the villains, she realizes that they're using a computer virus that she created. Meanwhile, Oliver and Thea try to address their differences, and Laurel makes an error of judgment because of her guilt.moreless
As the Devils head into the first game of the season, Jelena targets Ahsha. Pete spars with Sloane. Jelena and Olivia engage in a power struggle for control of the Devil Girls. Raquel looks for a job and deals with her troublesome ex, Jesse.moreless
Ahsha Hayes enters the wild world of professional basketball when she tries out for the elite L.A. Devil Girls dance team against the wishes of her mother Sloane, a former dancer herself.
It is Graduation day at McKinley High and bittersweet time for The New Directions.