After a violent shipwreck, billionaire playboy Oliver Queen was missing and presumed dead for five years before being discovered alive on a remote island in the Pacific. He returned home to Starling City, welcomed by his devoted mother Moira, beloved sister Thea and former flame Laurel Lance. With the aid of his trusted chauffeur/bodyguard John Diggle, the computer-hacking skills of Felicity Smoak and the occasional, reluctant assistance of former police detective, now beat cop, Quentin Lance, Oliver has been waging a one-man war on crime.

After a particle accelerator causes a freak storm, CSI Investigator Barry Allen is struck by lightning and falls into a coma. Months later he awakens with the power of super speed, granting him the ability to move through Central City like an unseen guardian angel. Though initially excited by his newfound powers, Barry is shocked to discover he is not the only "meta-human" who was created in the wake of the accelerator explosion -- and not everyone is using their new powers for good. Barry partners with S.T.A.R. Labs and dedicates his life to protect the innocent. For now, only a few close friends and associates know that Barry is literally the fastest man alive, but it won't be long before the world learns what Barry Allen has become...The Flash!

Out of the blackness, the first thing Jack senses is pain. Then burning sun. A Bamboo forest. Smoke. Screams. With a rush comes the horrible awareness that the plane he was on tore apart in mid-air and crashed on a Pacific island. From there it's a blur, as his doctor's instinct kicks in: people need his help.Stripped of everything, the 48 survivors scavenge what they can from the plane for their survival. Some panic. Some pin their hopes on rescue. A few find inner strength they never knew they had -- like Kate, who, with no medical training, suddenly finds herself suturing the doctor's wounds. Hurley - a man with a warm sense of humor despite the desperate situation - does his best to keep his cool as he helps those around him to survive. Charlie is a faded rock star who harbors a painful secret. Sayid is a Middle Eastern man who must wrestle with the racial profiling directed at him by some of his fellow survivors. Jin and Sun are a Korean couple whose traditions, values and language are foreign, and thus causes much to get lost in the translation. Sawyer has an air of danger surrounding him, and his intense sense of mistrust for everyone around him could prove to be fatal to his fellow castaways. Michael has just gained custody of his nine-year-old son, Walt, after the death of his ex-wife - they are a father and son who don't even know each other. Locke is a mysterious man who keeps to himself, and who harbors a deeper connection to the island than any of the others. Self-centered Shannon - who actually gives herself a pedicure amid the chaos - and her estranged controlling brother, Boone , constantly bicker and must learn to get along if they are to survive. And young Claire is eight months pregnant and ill-prepared for the hardships of motherhood - especially on a deserted island.

Simultaneously appearing over every major city in the world, the Visitors (or V's) arrived offering us the wonders of their technology and promoting peace. While the world quickly embraced the V's as saviors, an FBI Counter Terrorist Agent, and others making up the resistance group called The Fifth Column, quickly discovered that the Visitors are not who they said they were. Will humanity stop being fooled and realize the Visitors true intentions before it becomes too late and they take over Earth?