Season 1: The vampire Angelus, now known as Angel, has a human soul, but committed terrible crimes in the past. Seeking forgiveness and trying to redeem himself, he moves from Sunnydale (and a relationship with Buffy Summers, of Buffy the Vampire Slayer) to Los Angeles, where he helps the downtrodden by thwarting the supernatural creatures that prey on them.
Season 2: Angel continues to seek redemption, but a fatal mistake makes him realize that racking up the body count isnt the way to go. So with a renewed sense of purpose and Cordelia, Wesley and Gunn at his side, Angel sets out to make the streets of Los Angeles a little safer for everyone unaware that Wolfram & Hart has summoned someone from his past to make sure he fails.
Season 3: Even as Angel mourns the death of Buffy, Darla makes her way to L.A. with a mysterious new life growing within her. Now thrust into a role he never imagined, Angel needs the assistance of the Angel Investigations team more than ever. But while Cordelia, Gunn and Fred rally round the new dad, an ancient and deadly prophecy convinces Wesley to commit the ultimate betrayal.
Season 4: With both Angel and Cordelia still missing, Fred, Gunn and Connor try to keep Angel Investigations running while they search for their friends. Ironically, the man who everyone believes betrayed Angel is the one who finally comes to Angels rescue. Then Cordelia mysteriously reappears with no memory of her life or her friends. Confused, she chooses to take refuge with Connorsetting into motion events that will alter their lives forever.
Season 5: The Angel Investigations team is stunned when the Senior Partners of Wolfram and Hart give them control of the L.A. office. The gang quickly moves in, and although everyone is delighted at the amazing resources they now have at their command, they cant stop wondering what the catch is. But the biggest mystery of all revolves around a small package Angel receives containing an amulet and a handful of dustwhich coalesces into a very-much-alive Spike.