While Abby fears the worst when her AWOL brother suddenly disappears, Drs. Carter and Chen treat a frightened Chinese immigrant nanny whom they suspect was impregnated by her employer. Elsewhere, a new resident struggling to overcome his physical disability, tries to help in the E.R. -- but his advice to patients is unappreciated by his fellow doctors. In addition, Dr. Kovac cannot seem to quench his sexual appetites but his admirable resolve on the job to find an eye specialist to treat a young gunshot victim gets him into more trouble; Drs. Gallant and Harkins engage in an escalating game of one-upsmanship concerning their medical knowledge; Dr. Weaver gets some much-needed good news.