Firefly Era: Last Light Before Extinction

When the sun vanishes without warning, Earth plunges into eternal darkness—and humanity's countdown to extinction begins. With technology failing and the food chain collapsing as every plant withers, civilization faces its final days. Enter Project Firefly: a desperate gambit to send volunteers back through time to harvest solar energy before it's too late. Bai Hao, chosen for this one-way mission, must navigate the past to secure humanity's future. But in a world where the sun itself can disappear, what other impossible dangers lurk in the shadows of history?