A mouse saw a farmer and his wife open a package and feared it contained a mousetrap. When he discovered it was indeed a mousetrap, he warned the other barnyard animals but they dismissed his concerns. That night, the trap caught a venomous snake whose bite gave the farmer's wife a fever. To treat her, the farmer killed the chicken, pig, and cow to feed visitors and for funeral meals, leaving the mouse alone in realizing how the animals' dismissals impacted them all.