After returning from helping Rudolph the Red-Nosed Reindeer and Borealis the arctic fox save Christmas, the ponies discover that their Unity Quest is not over-- now they have a new mission to accomplish with their misfit friends.

When Happy, the Baby New Year, goes missing and throws everything out of balance, Rudolph and Borealis, plus their Equestrian friends, journey back in time through the Archipelago of Last Years to look for him, with the help of some new friends... and they must find him before a giant monster bird by the name of Aeon the Terrible does, or the new year will never arrive!

Also, watch the Mane 6, Rudolph, Borealis and their intrepid rescue team make new friends, the auroricorns of Starlight Ridge, and help them save their community from a villainous snow leopard who has a hypnotic purr to make the auroricorns do whatever she wants.

And they must do all this while another terrible plot, devised by Misty's own birth mother, occurs in the background.

(S2E9 of G5 Adventures, and part two of the two-part holiday special)

(Includes scenes from and based off of Secrets of Starlight.)