Once Upon a Time is heading into its fifth season with a special "fan celebration" ahead of the premiere.

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ABC is set to air a new special called Dark Swan Rises: A Once Upon a Time Fan Celebration an hour before the season 5 premiere.

The special offers a look at Emma (Jennifer Morrison) and her transformation into the Dark One, while also showcasing the other main characters and their journeys.

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ABC writes that the special "will explore what will happen next as Emma Swan becomes the Dark One and will highlight the characters fans love, including the incredible stories that have created an extraordinarily passionate fan base."

The show's main cast will "answer fan-submitted questions and discuss favorite moments as voted on by fans, giving viewers an authentic perspective as they dish on various characters, relationships and backstories. The special also features interviews with executive producers Edward Kitsis and Adam Horowitz with exclusive insights about the season fans won't want to miss."

The special will air at 7/6c Sunday, Sept. 27 on ABC.

ABC has produced these recap/preview specials in past seasons.

Emma will become an even greater character in season 5 now that she has succumbed to the dark side. The question will be if Regina (Lana Parrilla), Snow (Ginnifer Goodwin), Hook (Colin O'Donoghue) and the others are able to save her or if she becomes the main villain of the series.

Once Upon a Time season 5 premieres Sunday, Sept. 27 at 8 p.m. ET/PT on ABC.

Tags: Once Upon A Time television ABC