In "Christmas Under Siege," a group of girls from their class expresses a keen interest in learning Rune magic from Fay, Izabella's mother. However, their peaceful pursuits are disrupted as mysterious assailants target magical creatures in the town, prompting the friends to investigate the unfolding crisis.
The adversaries zero in on an ancient church nestled in the woods, concealing a potent artifact. As they delve deeper, Izabella uncovers a more sinister enemy at play. Meanwhile, the goblins, too, fall prey to the spreading mould, thrusting the friends into a collaboration with the dwarves to repel the goblin threat. With the goblin conflict resolved, attention turns back to the old church. The barrier safeguarding the malevolent creatures within is breached, and now the friends must engage in a perilous battle to safeguard their lives against the unleashed forces. "Christmas Under Siege" unfolds as a high-stakes adventure, testing the resilience of friendships and the strength of their magical abilities.