 Tom chases Jerry into a fish cannery; they get sealed into cans. Tom breaks out, but falls off a pier as the cans roll under him. A shark chases him out of the water; Tom drops an anchor on the shark. Meanwhile, Jerry has been hopping in his can; Tom opens it, and puts his finger in, which Jerry bites. Jerry tricks Tom into falling off the end of another pier, and right into the shark s path again. The shark manages to get Tom into a very precarious position, barely holding the jaws apart. Jerry takes pity, and dumps a shaker full of pepper into the shark, which ends up on the processing line and stuffed into a huge can. Tom is unrepentant, so Jerry tricks him with a fake shark fin.