Ella Raven is coping with the loss of her boyfriend and One, Oliver, but with the help of her new battle partner Jordan, grief-stricken Lex, and mysterious Alec, who she may or may not have feelings for, she might be okay-until Oliver's grave is found empty. He's alive, but something is wrong, and it's up to Ella to find out what it is. Then things take a turn for the worse when Ella is possessed. The situation looks hopeless and it's up to Alec to save her, with help from Lex, Alice, Jordan, Jenna, Lewis, Casey, and a few others.