Royal sisters Anna and Elsa continue their "Frozen" journey in a new series of spin-off chapter-books from Random House, according to The Wall Street Journal. The action picks up right where the Disney blockbuster left off.

The publishing house will release the first two books, "Anna & Elsa #1: All Hail The Queen" and "Anna & Elsa #2: Memory And Magic," written by author Erica David, on Jan. 6, 2015. Two more will follow later that year. Plans are to release "three to four" titles per year.

The Snow Queen and Princess of Arendelle's story will join Disney's other chapter book series, "The Never Girls," and Random House hopes the Frozen series will build a similar fan base. A line of "Frozen"-related books already exist for younger fans to read with their parents.

"We have seen our Disney 'Never Girls' series fill a real niche in the chapter book market, and with the momentum for 'Frozen' only continuing to grow, we know this was the perfect focus for this new series," said Random House president Barbara Marcus.

"The Never Girls" follows four special girls who find themselves in Never Land, "a place full of magic, where mermaids sing, fairies play, and children never grow up," according to Random House Kids. The series contains seven books, a puzzles and games book, and a journal for girls ages six to nine.

Disney's "Frozen" earned $1.2 billion worldwide and the soundtrack is one of 2014's biggest-selling albums, thanks to the Oscar-winning song "Let It Go," sung by Broadway star Idina Menzel. It topped the Billboard album chart for 13 non-consecutive weeks and has sold more than 3 million copies.

The ABC TV series "Once Upon A Time" will introduce "Frozen" characters Elsa, Anna and Kristoff in the upcoming fourth season. The show returns on Sunday, Sept. 28.