Superman: Last Stand of New Krypton #2

Synopsis

While Superman receives a last-minute save from an old friend, Superboy -- who becomes separated from the Legion within Brainiac's ship -- encounters Lex Luthor, who removes his powers and places him within the re-bottled city of Kandor. General Zod, who still considers Conner an enemy, knocks him out as he prepares his own counter-attack against Brainiac.