On ONCE UPON A TIME's upcoming episode, titled "The Queen is Dead," upon discovering Cora and Regina's plan to find and take possession of Rumplestiltskin's dagger, Mary Margaret, with the aid of David and Mother Superior, makes it her mission to find it first; and while Mr. Gold continues his quest in New York to reunite with son Bae, Hook devises a plan to rid himself of a crocodile. Meanwhile, in the fairytale land that was, the Blue Fairy offers Snow White an unconventional enchantment that could help save her dying mother, Queen Eva, on SUNDAY, MARCH 3 (8:00-9:00 p.m., ET) on ABC.