One day, the family sets off on a hot spring trip together. In an effort to strengthen the bond with his father's new wife, they all soak in the bath, drawing their hearts closer. However, hidden desires buried within the sleeping family begin to sprout amidst the steamy mist. The siblings start craving each other's bodies, questioning their instincts as men and women. Depicted is their intense entanglement, twisting and clinging beyond the boundaries of family. Under the name of love, their feelings intersect and deepen. Through this journey, will the family's bond be reconstructed into a new form...?