Grey's Anatomy: See pics from the season 15 premiere

Kim Raver -- here with Ellen Pompeo (Meredith) and Greg Germann (Tom) -- returns as Teddy, who will reveal she's pregnant in the new season. The two-episode premiere named "With a Wonder and a Wild Desire" and "Broken Together" airs Sept. 27.

During the first hour of the two-hour season premiere, the doctors at Grey Sloan Memorial vie for a new position. Meredith is seemingly distracted and struggles to stay focused, and Maggie finds herself the keeper of a big secret while Amelia and Owen try to figure out their relationship. Meanwhile, Jo and Alex's honeymoon doesn't go exactly as planned.

In the second hour of the premiere, new doctors continue to shake up the hospital in typical Grey Sloan manner. Meredith bonds with a patient while Jackson struggles with the meaning behind recent experiences; and after making a life-changing decision, Jo forms an unexpected alliance.