When Lily's human-hating cousin Dosinia is exiled from Thalassinia and sent to land, Lily is faced with the huge task of keeping her on the straight and narrow. But what did Dosinia do to get exiled in the first place? And why is she batting her eyelashes at Brody, Lily's former crush? As if her bratty cousin weren't enough to handle, the reappearance of a merboy from Lily's past makes her question her decision to renounce her kingdom and stay on land with Quince.