Daniel leads Madison, Travis and Ofelia on a mission to rescue Nick and Griselda from The National Guard before COBALT goes into effect.
Meanwhile Liza and Dr. Ortiz face a harrowing situation as the base is breached by thousands of infected while Chris and Alicia face a human threat as the entire group fights to reunite and escape LA.
Gold and Ursula recruit Cruella to their cause and travel to Storybrooke. Meanwhile, Hook works with Belle to free the fairies from the Sorcerer's Hat and succeed, but end up unleashing a greater evil. In the past, Rumplestiltskin convinces the Queens of Darkness to help him retrieve the dark curse that prevents them from getting their happy endings.moreless
As Will attempts to help Alexei coup with his abnormality, Helen gets a visitor from her past.