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Bank executive Hong Gui and business owner Wu Haodong have found a new direction in their careers, but fate seems to have re-judged them, leaving them living on the edge of love and pain.

Tian Lanlan and several of his classmates caught a grouper by chance in order to learn English. Because of this, Tian Lanlan and others gradually discovered that they contained powerful superpowers. Their mission is to go to the bottom of the sea and fight a life-and-death battle for the earth...

Hong Gui had an adventure while changing jobs and unexpectedly became a "bad debt collector". With his unique ability as a "bad debt collector", he has made great changes in the workplace.