A naiad faces two choices: Will you do what it takes to save your adopted mermaid daughter? Or, will you risk your life and the lives of others to satisfy your own selfish desires?

Empress Renée, a dissatisfied naiad, is provided a key that can either save Nadia, her adopted daughter, or destroy everything. With the beloved Rein Bow returning to assist the empress in opening her eyes, Renée starts her journey in the wrong direction, preferring instead to find the World Wonder that the key unlocks to satisfy a personal desire. Will Rein be able to convince the unhappy empress to cease in thinking of only herself?

Dive into The Key, which officially sets The Rose Tree Chronicles in motion. Here a collision is under way with the risk of the sea meeting land. Fraught with personal struggles and new mysterious characters, The Key is the spark to ignite the inferno that is The Rose Tree Chronicles.