In the Season 2 premiere, Supergirl's famous cousin arrives on the scene to help her deal with a new threat to the citizens of National City. While having Clark Kent around is a thrill for Kara, their family reunion leaves Alex feeling a bit left out. Meanwhile, Cat Grant encourages her young protégé to make a bold decision in both her personal and professional lives; and Hank and Supergirl are stunned by the alien pod that crashed to Earth.