For thirty years, Iris and her husband Tom steadfastly guarded a seaside lighthouse, keeping its light as a guide for passing ships. After Tom retired, he secretly transferred the lighthouse to a developer who planned to demolish it for a resort. Unwilling to let her life's work disappear, Iris refused to yield to threats and inducements. She spoke out online, quickly attracting support from netizens, fishermen, and students. An all-night live-streamed event drew hundreds of thousands of viewers, and the immense public pressure forced the developer to abandon the demolition plan. The century-old lighthouse was designated a protected structure, and Iris officially became its keeper. Tom, filled with remorse, eventually passed away. As time passed, the aging Iris relinquished her responsibilities, passing the torch to her young successor, Liam. Forty years of unwavering dedication came to an end, but the lighthouse's light will continue to illuminate the way home.