"Grey's Anatomy Season 12" concluded with the wedding of Owen ( Kevin McKidd) and Amelia's (Caterina Scorsone); a misunderstanding between Alex (Justin Chambers) and Jo ( Camilla Luddington); and a tense scene between Alex and Andrew DeLuca (Giacomo Gianniotti).

There were also some spice of love triangle - Meredith (Ellen Pompeo) slept with Nathan (Martin Henderson) while her sister Maggie (Kelly Mc Creary) admitted to have feelings for the same guy. 

Season 13 offers more.

The Hollywood Reporter revealed that the new season will open with an explosive drama just right after Owen and Amelia's wedding.

"This is rather a key story for the whole year which a lot of people will be much interested in," said Scorsone.

She added that Season 13 will focus on the show's original cast, including Alex, Bailey (Chandra Wilson), Meredith, and Richard (James Pickens Jr.) who will all play essential roles in the season.

"There is going to be a lot of checking in the original cast; we love them so much and there has been such a renaissance with the show that it's nice to focus on the core pieces that have been there since the very beginnings," added Scorsone. 

As per Meredith, Scorsone said: "Meredith and Maggie still helping with the kids and they're going to have an interesting dynamic this year based on the whole Nathan love triangle."

There seems to be a lot to expect with "Grey's Anatomy Season 13". A whole lot of excitement, drama, explosives and twists - the same reason why the show remain No. 1 at ABC.