Rorona, a dedicated apprentice alchemist in the kingdom of Arland, finds herself thrust into an impossible situation when royal officials threaten to shutter her mentor's workshop for failing to demonstrate its worth to the crown. Left to fend for herself after her mentor Astrid abandons the responsibility, Rorona must shoulder the burden of keeping the atelier alive by fulfilling increasingly demanding commissions from the castle. With her career hanging in the balance and the workshop's survival uncertain, she faces the challenge of proving that alchemy remains essential to the kingdom's future.