A yellowed map sandwiched in an old book guides Lin Yu on his journey to find the source of his bloodline. When he arrived at the forgotten island "Gui Island", he discovered not only the forgotten love and sacrifice of his parents, but also the truth about a genetic disease that has haunted the family for hundreds of years. Between the tide and the medical records, Lin Yu must re-examine the value of life, and find his own way back and answer in the deep love between birth and birth. This is a soulful story about illness, memory and reconciliation, about how we live with the past and anchor infinite love in limited time.