Sequel to The Girl Behind the Door: Elsa and Johan have both moved on with their lives after their childhood romance. But when they meet again at Johan's sister's wedding, neither of them can figure out whether the feelings they held for each other when they were 14 still exist. But amidst their struggle, a mysterious plot against them begins to reveal itself...

Prince Johan of Landvik is just like any other adventurous 14-year-old boy. When his father takes him on a business trip to Arendelle, he is eagar to discover the kingdom's mysteries. Boring as it was to watch the kings do business or play with young Princess Anna, he couldn't help but wish to glimpse the mysterious older princess, who always remained hidden behind a locked door...