Smallville - Season 10 Episode 12

Clark, Oliver, Lois and Dinah are back home after long VRA captivity, with confused memories and robbed of all superhero-powers. They believe they have been tortured in an experimental lab by none other than Chloe, hence fear she switched sides. Then she, or rather her avatar, appears in dreams to each of them, claiming they only lost their powers in a virtual illusion, which can nevertheless kill them for real. She calls upon them to trust her, break the virtual spell by believing it fake and thus escape back into reality, with Rick Flag's team. Oliver does so quickly, and is reunited with his true love. Clark wants to, but finds it extremely hard, until Lois joins in.