Lena testifies against Lillian; Kara encourages her to visit Lillian, who reveals that she is her husband's daughter from another woman. A package of synthetic kryptonite is sent to Corben. While testifying, he attacks the court and frees Lillian. A faked video is leaked showing Lena stealing the kryptonite, and she is arrested on suspicion of helping Lillian. Corben breaks her out. Kara remains as the only person to believe in Lena's innocence. Lillian takes Lena to a remote facility set up by Lex before his imprisonment and forces her to access a stockpile of alien weapons, several of which she takes. Kara arrives and intervenes. Winn determines that the synthetic kryptonite is becoming increasingly unstable and will soon explode, and Kara manages to save Lena before Corben self-destructs, while Lillian and Henshaw escape by helicopter. Lena is exonerated, but begins contemplating her relationship with her family, especially Lex. Kara and Mon-El, who ended his relationship with Teschmacher, confess their feelings for each other at her apartment when a man calling himself Mister Mxyzptlk arrives and declares his love for her.