"Once Upon a Time" season 4, episode 2 spoilers will reveal the connection between David and Anna as cast Ginnifer Goodwin's Mary Margaret tries to restore Storybrooke.

In the "Once Upon a Time" season 4, episode 2 spoilers from Hypable, David (Josh Dallas) will have a flashback and it will be revealed that he actually knows Anna (Elizabeth Lail) from his past.

The synopsis for the second episode reads: "In the Enchanted Forest of the past, Anna tries to teach a meek David to fight Bo Peep, a brutal warlord who is threatening to take his and his mother's farm away if they don't pay her price. [Meanwhile] Elsa is startled by Emma and accidentally traps them both inside an ice cave, with the frozen temperature placing Emma's life in peril."

"Regina, depressed over her likely breakup with Robin Hood, secludes herself away from the town and Henry, which saddens her son. And with the townspeople considering Mary Margaret their leader, she faces her first leadership task in trying to re-start a generator and restore the town's electricity after Elsa freezes and damages the power lines," the synopsis adds.

New "Once Upon a Time" season 4, episode 2 spoilers from The Hollywood Reporter reveal that Mary Margaret will face "her first big test: trying to restore power to the town after Elsa freezes the power lines."

In the next episode, Queen Elsa (Georgina Haig) accidentally traps Emma (Jennifer Morrison) in an icy cave which put her life on the line. Regina (Lana Parrilla), meanwhile, is obsessed with her problems with Robin Hood and Maid Marian and neglecting her duties as mayor of the town.

The website said that Mary Margaret's "struggles to solve the problem are noted by Happy (Mike Coleman), Grumpy (Lee Arenberg) and Granny (Beverley Elliott), who suggest other Plan Bs (Gepetto, Dr. Will), angering Mary Margaret in the mean time."