The cartoon starts with Tom fishing on a pier. Tom baits the line with "cheese" and casts it all the way out to a far-off ship and into Jerry's mouse hole. The cat gets a bite and gets pulled off the pier and onto a pillar, while the sleeping mouse nibbles at the "cheese". Unbeknownst to him, the "cheese" is in reality, legally rubber. Tom catches the mouse in a fish net and plops him onto the pier, waking Jerry up with a start.
CBS