ABC announced today that it will begin streaming an original webisode series entitled Seattle Grace: On Call.

Six episodes of the online-only Grey’s Anatomy expansion, set primarily in popular Seattle Grace doc hangout Joe’s Emerald City Bar, will be four to five minutes long and star Steven Bailey as Joe the Bartender, Mark Saul as Intern Steve, Molly Kidder as Intern Megan, Joseph Williamson as Intern Pierce, Gloria Garayua as Intern Graciella, Brandon Scott as Intern Ryan, Nora Zehtener as Reed Adamson, and Robert Baker as Charles Denman.

The first installment will be available online following tonight’s episode of Grey’s, beginning at 10:00 p.m., ET.