The corridors of Seattle Grace Hospital are busy and bustling as ever, a constant flow of doctors, nurses, and patients all coming and going. There's all kinds of doctors from various departments: Meredith Grey, Cristina Yang, Alex Karev, Callie Torres, Mark Sloan, Arizona Robbins, Derek Shepherd, Addison Montgomery, April Kepner, Teddy Altman, Miranda Bailey, Jackson Avery, Owen Hunt, Lexie Grey, Richard Webber, etc. in a steady stream of people along the corridors.