• Ellen Pompeo, Caterina Scorsone, Justin Chambers, Chandra Wilson, James Pickens, Jr., Camilla Luddington, Sarah Drew, Jerrika Hinton and Kelly McCreary attend the People's Choice Awards 2016.

Ellen Pompeo, Caterina Scorsone, Justin Chambers, Chandra Wilson, James Pickens, Jr., Camilla Luddington, Sarah Drew, Jerrika Hinton and Kelly McCreary attend the People's Choice Awards 2016. (Photo : Getty Images/Frazer Harrison)

"Grey's Anatomy" Season 13 premieres with episode 1 titled "Undo" on Sept. 22, Thursday. The upcoming segment will see one of Grey Sloan's in need of immediate medical attention. Meanwhile, the show will see Meredith struggle to keep a secret. Here are the detailed spoilers for the next chapter of the series. Read on to find out what happens next. Also, find out where to watch online via live stream. Scroll down for the link.

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[Spoiler alert! This article contains spoilers for "Grey's Anatomy" Season 13 episode 1 (premiere) "Undo." Do not read further if you don't wish to know more about it.]

In the last aired episode, Owen and Amelia finally tied the knot. Jo makes a big revelation of being married, already. And Ben delivers April's baby in an emergency c-section. Arizona allows Callie to live her life with Penny while they share Sofia's custody and Meredith finds out that Maggie likes Nathan.

"Grey's Anatomy" returns with Season 13, this week. Episode 1 "Undo" will see Owen and Amelia start their domestic life. April and Jackson will be starting their lives as parents. Speculations are rife suggesting they could get back together.

In the meantime, ABC has released a detailed synopsis for "Grey's Anatomy" Season 13 premiere on its official website. According to the press release, two of Grey Sloan Memorial hospital's doctor are in trouble. They come face to face with the severe consequences of their past actions.

It is said that one of their own will need medical treatment. Bailey takes the front and tries to find out what actually happened. Meanwhile, others come together to help one of their own.

A promo video for "Grey's Anatomy" shows it is Andrew who needs medical help after Alex attacked him. He is in bad shape and fighting for his life. Meredith warns Alex that he could go to jail for his actions. Scroll down to watch the promo video online.

Elsewhere, Meredith struggles to hide a huge secret from those who are close to her. This hampers her relationship with Alex and Maggie.
In addition, Jo finds Richard by her side when she has to take a big decision. As for April and Jackson, the new parents are seen fighting with each other over issues related to their new born.

More promo videos show what happens when "Grey's Anatomy" Season 13 teases what happens when the season opens. It shows Catherine Avery playing with Jackson and April's baby. It is then when April breaks the news that they have decided the baby's name and it is not Catherine.

"Grey's Anatomy" Season 13 episode 1 "Undo" airs Sept. 22, Thursday at 8.30 pm on ABC. Fans can also watch the premiere online via live stream on abc.go.com. Stay tuned, more spoilers and updates are expected soon.