Byeoljubujeon summary:

Why does the Dragon King seek a rabbit? Cheong-wan, a turtle from the Dragon King's palace, ventures onto land to retrieve the liver of a rabbit to cure the ailing king. By sheer luck, he encounters the elusive rabbit almost immediately upon arrival. Determined to bring the rabbit back to the Underwater Kingdom, Cheong-wan is prepared to do whatever it takes."And how will you convince me?" "Sorry?" "If I go to the Dragon King's palace, what will you do for me in return, Cheong-wan?" Cheong-wan finds himself mesmerized by the rabbit Jeok-ran's playful smile and enigmatic words. He realizes that to succeed, he must go to far lengths. Thus begins a perilous and enchanting journey, as Cheong-wan navigates a world filled with unexpected challenges and mysterious allurements, where the stakes are as high as the depths of the Dragon King's palace.