The ER reopens after extensive remodeling and includes new state-of-the-art technology. Meredith worries that something might be wrong with the baby. Cristina is frustrated when her new administrative duties cut into her medical research time. Callie and Arizona work on improving their sex life. Bailey is pushing for the hospital to sponsor her genome sequencing project. Meredith starts “catastrophizing” about potential congentinal defects before she and Derek find out the sex.