This image released by Disney shows Elsa the Snow Queen, voiced by Idina Menzel, in a scene from the animated feature "Frozen." (AP Photo/Disney)

The kingdom of isolation just got another inhabitant. Disney will release "Frozen Fever" in the spring of 2015, a new short film featuring characters from "Frozen." Jennifer Lee and Chris Buck will return to direct the short, which will include a brand-new song from Robert Lopez and Kristen Anderson-Lopez, the Oscar-winning duo behind "Let It Go."

"It's Anna's birthday and Elsa and Kristoff are determined to give her the best celebration ever, but Elsa's icy powers may put more than just the party at risk," reads a plot description for "Frozen Fever" provided by Disney. As the studio noted, Olaf, the snowman voiced by Josh Gad in "Frozen," will also appear. No word from the studio if Gad or stars Kristen Bell, Idina Menzel and Jonathan Groff (as respectively, Anna, Elsa and Kristoff) will reprise their voice roles for the short.

Released on Nov. 22 of last year, "Frozen" grossed $1.274 billion worldwide. It won two Oscars at the Academy Awards back in March: Best Animated Feature and Best Original Song (for "Let It Go").