The Teletubbies are sleeping in their beds until it's time for Tubby Custard. They wake up and cheerfully say, "Tubby Custard, Tubby Custard!" They go over with their bibs on and head over to the Tubby Custard Machine.
Po makes her Tubby Custard first. While holding her Tubby Custard bowl, Po cheerfully jumps up and down a little when she accidentally spills some of her Tubby Custard on the floor. The narrator says, "Be careful, Po, you're spilling your Tubby Custard." After Po notices, she says "Oh dear." After she sits at the Tubby Table with her Tubby Custard, Laa-Laa makes her Tubby Custard. But the narrator warns her, "Be careful, Laa-Laa, don't tred in the Tubby Custard." She listens and goes over to the Tubby Table with her Tubby Custard along with Po. Dipsy makes his Tubby Custard. But the narrator warns him, "Be careful, Dipsy, don't tred in the Tubby Custard." He listens and goes over to the Tubby Table with his Tubby Custard along with Laa-Laa and Po. Tinky-Winky is last to make his Tubby Custard. But the narrator warns him, "Be careful, Tinky-Winky, don't tred in the Tubby Custard." But Tinky Winky doesn't listen. Suddenly he treds on the Tubby Custard and starts sliding. He slides past the doors, the other Teletubbies, the Noo-Noo and up the slide.
The Noo-Noo tidies up the Tubby Custard that Po spilled. Tinky-Winky comes back inside. His Tubby Custard bowl is empty and his bib is very messy, so Noo-Noo tidies up the Tubby Custard. Tinky Winky thanks the Noo-Noo and goes over to Tubby Table with the others. He looks in his bowl and realises that he hasn't got any Tubby Custard left in his Tubby Custard bowl. Dipsy decides to give some of his Tubby Custard to Tinky Winky and pours it into his bowl. Tinky-Winky thanks him. At last, the Teletubbies enjoy their Tubby Custard until the Magic Windmill spins. The Teletubbies say "Oh! Uh-oh!" and run away for the TV Event.