Beach Picnic.

Donald Duck is at the beach and tries to ride a rubber horse. He notices Pluto sleeping at the shore and decides to have some fun with him by sending the rubber horse over to Pluto which completely mesmerizes him. Meanwhile, a tribe of ants abduct Donald's picnic lunch. Donald lays out fly paper to stop the ants. Pluto follows one of the ants and, of course, he and later Donald become enmeshed in the fly paper