When a very lonely firefly goes out into the night searching for other fireflies, it sees a lantern, a candle, and the eyes of a dog, cat, and owl all glowing in the darkness. It even sees a surprise celebration of light. But it is not until it discovers other fireflies that it finds exactly what it's looking for. Step 2 Readers use basic vocabulary and short sentences to tell simple stories, for children who recognize familiar words and can sound out new words with help.