Scientific research maniac hero foresees the water monster crisis. In his past life, he desperately balanced family and academics, but was betrayed by his wife. After rebirth, facing the family trip again, his wife actually brought her lover along to mock him. When the water monster suddenly attacks, everyone panics. Relying on his past-life memory and scientific research technology, the hero calmly leads his daughter and the kind second female lead to escape desperately. This time, he only lives to protect the people who truly matter!