A Carrot and Peas

One day, on one of the flower beds, the idyllic morning calm is interrupted by a
desperate scream: Carrot! Carrot! Wake up, we are in danger! It is the little pea,
pulling at the thread with all his might, who tries to wake up his neighbour. Why?
What is happening near the bed? Who is the monster with four wheels? Where
did the mysterious El Tomato, the Potato Man and the rest come from?