Superman is cured of Virus X because the Bizarros exposed him to White Kryptonite, which destroyed the plant-like bacterial infection. However, when he returns to Earth he learns that no one is still in mourning, because his Justice League friends have been masquerading as him, keeping him "alive" until Supergirl can train a Kandorian replacement.; Two women with super-scientific weapons construct a dome over Stanhope College that will set off a bomb if Supergirl uses her powers against it, keeping her out of the way while they search for one particular student.