At Fantabularasa Castle, the atmosphere is filled with excitement as the Princess Rose celebrates her momentous 18th birthday. This special occasion is marked by a crucial rule: she must avoid pricking herself on any sharp object before midnight, or else the curse set by the wicked ice fairy, Dellamorta, will cast the entire kingdom into a slumber for a century. To ensure her safety, the princess dons an ornate suit of bronze armor, adding an air of boldness to the festivities.
However, the event takes a turn for the worse due to the misadventures of Bubi, the clumsy seventh dwarf. His unfortunate mistake triggers Dellamorta’s curse, plunging the princess into a deep sleep. To break this enchantment, a kiss of true love is essential. Enter Burner, a melancholic dragon who, despite his gloom, decides to lend his assistance to the seven dwarves as they embark on a quest to find Prince Charming. Surprisingly, they discover that the true prince is none other than Jack, the humble kitchen boy. However, his fate darkens when the Ice Fairy punishes him, turning the dragon into an ice statue and capturing Jack.
As the dwarves give chase after the Ice Fairy, Bubi shares a heartfelt farewell to his dear friend Burner. In a moment of warmth, he presses his little hand against Burner's icy heart, awakening the dragon’s inner flame. But the dwarves remain oblivious to the thawing progress as they pursue Jack to the throne room of the Fantabularasa Castle, where Princess Rose lies in peaceful slumber.
Determined, Bubi pushes for Jack to kiss Rose, but his efforts face off against Dellamorta's dark enchantments. Rose is ensnared by a powerful spell, and it's only when Bubi plays her music box that Jack begins to remember his feelings for her. Just as hope seems dim, Dellamorta intensifies her attacks, summoning a formidable ice monster to thwart Jack’s attempt to rescue Rose.
In the midst of the fray, Bubi uncovers a magic potion concocted by the court tinkerer, but before he can deliver it to Jack, the Ice Fairy snatches it away. The dwarves teeter on the brink of despair, yet just in the nick of time, a transformed Burner emerges, fully thawed and able to breathe fire once again. His flames quickly dispatch the ice monster. However, the dragon's efforts fail against Dellamorta, who retaliates with her icy blasts.
As chaos reigns, Jack struggles to reach his beloved Rose. Noticing the danger, Bubi takes decisive action, unwittingly positioning a large mirror between Jack and Dellamorta, which causes her ice beams to rebound back onto herself, transforming her into an ice figure. With Dellamorta now powerless, Jack can finally approach the sleeping Rose and bestow upon her the long-awaited kiss. This act of love breaks the spell, awakening the entire castle and all its inhabitants from their century-long slumber, bringing a joyous end to a tale filled with mischief and bravery.