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The awakening of an underwater volcano brings a forgotten ship back to the sea’s surface. CHOU Yi-bai miraculously wakes up in a sleeping pod after 68 years, but his memory remains in 1955. Returning to CHOU’s property, he encounters CHOU Mo, his grandson. The two are forced to live together despite their contrasting personalities and habits. They never expected a series of troubles awaiting them.

On the other hand, boxing champion LU Fei finds herself unable to erase the image of an unfamiliar man from her head. As the nostalgic piano notes play, frozen memories are about to thaw. What mystery was buried in the sea trenches, and how has it shaped the CHOU family’s destiny?