At one swoop in Kanji

To cast down a net once and catch many fish. In turn, to capture all the members of the crew in one fell swoop. Clearing up complex situations all at once.

Japanese says “Ichi mo da jin”.
“Ichimo Dajin” is said to be derived from the ancient Chinese history book “Sung Shi”, a Chinese text “Fan Chunren”. Many people seem to misunderstand it, but it was originally said to be a word shouted when catching bad guys, and catching fish and beasts is an afterthought.