Emma and Hook's love faces the ultimate test! ABC has released an official synopsis and sneak preview for next Sunday's "Firebird" episode of Once Upon a Time.
Hades turns to the heroes to ask for help with getting Zelena back from Rumplestiltskin and Peter Pan. In return, he offers to take all their names off their tombstones. However, when Hook is still unable to leave, he and Emma must journey into the depths of the Underworld. Meanwhile, Cruella De Vil is determined to keep the heroes trapped in the Underworld. In flashbacks, Emma searches for answers about her family and makes an unexpected friendship.
Watch the episode's trailer in the video below.
Guest stars include Emma Caulfield as the Blind Witch, Robbie Kay as Peter Pan, Victoria Smufit as Cruella De Vil, Rya Kihlstedt as Cleo, Geoff Gustafson as Stealthy, Bronwen Smith as Cashier, Max Chadburn as Tasha and Greg Germann as Hades.
The episode was written by Jane Espenson and directed by Ron Underwood.
"Firebird" will air Sunday, May 1 (8:00-9:00 p.m. EDT), on the ABC Television Network.