'Once Upon a Time' Season 4 Spoilers, Cast Rumors: New Villains To Be Introduced

"Once Upon a Time" returns on ABC on March 1, 2015, Sunday, 8 p.m. EST. Fans just can't wait to find out what is about to happen amid rumors that new villains will be introduced in the show.

We have watched Emma (Jennifer Morrison) and Hook (Collin O'Donoghue) develop a budding relationship, but things are far from becoming official.

Meanwhile, we all saw during the winter finale how Ursula (Merrin Dungey) and Cruella de Vil (Victoria Smurfit) joined Maleficent (Kristin Bauer van Straten) as the "Queens of the Darkness." These three so-called queens simply wanted to put everything in their hands after getting tired of losing their heroes. The plan? To get a hold of Camelot's magical glove.

The three kidnapped Belle (Emilie de Ravin) and thought that they were on their way to getting the magical glove, which was with Rumplestiltskin (Robert Carlyle). As it turned out, Rumple had tricked the women and was able to save Belle and keep the glove.

Meanwhile in the present day, the three queens get to travel out of the Enchanted Forest and right into New York City.

When "Once Upon a Time" returns, Hook will be seeking revenge against Rumple. Hook may have had a past relationship with Ursula, but this hasn't been confirmed.

Where there is Ursula, Ariel couldn't be far behind. Co-creators Eddy Kitsis and Adam Horowitz have confirmed that Ariel will be returning to the show. Ariel's father, King Poseidon (played by Ernie Hudson) will be alongside her.