The Blues have the hiccups. The other birds try to make it stop, but it just get worse...
In the late evening, Red is cooking several bowls of a reddish stew (similar to the stew in the title card of Cordon Bleugh!, meaning that Red is a great cooker compared than other birds) to bring them to the other birds for dinner. While he finally passes the last three bowls to The Blues, they eat it at a ridiculously fast speed, and end up making a mess of their bowl, faces, and the table. After one of them hiccups, another hiccups, simultaneously bouncing upward. The rest do the same, while the other birds dote them.
Later, at night-time, The Blues, who are in a small bed made with wood and hay, hiccup during the night, but are not disturbed by it at all, but this keeps the other birds, who are sleeping in a tree, awake. The next morning, the Blues hop out of bed as they have a big day. They are extremely energetic as usual, however, the other birds barely manage to get out of bed. When this happens, one of The Blues make fun of the others by mimicking one of the birds by pretending to be extremely drowsy and fall asleep on the ground, finally followed by laughter and hiccups. This attracts the other birds' attention and causes them to be aggravated.
When the Blues begin playing by the slingshot, Bomb, Chuck, and Red spy on them hiccuping and bouncing around. They all think of a way to stop the Blues from hiccuping, when Chuck thinks they should 'Scare' the hiccups out of them. The other birds approve of this idea, at which point Chuck immediately changes into a ninja disguise holding a nunchuck. Then he bounces out of the bush doing various ninja stunts in order to scare them, but they just blink, laugh, and hiccup. Red suddenly pounces out of the bush with a monster costume, composed of dirt, leaves, and twigs. But this fails as Chuck mistakes him for a real monster and attacks him. Once both costumes are partially torn apart, Red scolds Chuck while he realizes what he has done.
Finally, Bomb thinks of a way to scare them, and considers exploding next to them. While the Blues head towards Matilda, pampering the eggs, Bomb follows close behind and hides in another bush. Finally he jumps out with his fuse lit. Matilda goes over to shield the eggs, and Bomb explodes. While he leaves a crater and the Blues seem to stop hiccuping, he gives a boastful 'Yeah-yuh!' But the Blues hiccup again and he groans. With the crater made, mud is spread all over Matilda and the Blues, and Matilda realizes she has the opportunity to clean them, and produces a bar of soap and a brush, partially covered in suds. This makes the Blues scream, and run to their bed and hide.
When the rest of the birds look at the Blues, Matilda reveals them by pulling the covers, still with a look of terror on their faces. After Red and Matilda (Matilda brings out an ear trumpet) listen for any hiccups, they are all satisfied, and Chuck laughs. However, a hiccuping noise is heard, at which point the birds turn hostile on the Blues, growling. The Blues come from happy to sad in an instant, with dilated pupils, one of them shakes their head, telling them they didn't do it. Much to their surprise, the hiccups is not from The Blues, it's from the Eggs.
As the credits roll, the Eggs continue having hiccup sounds.