There are not separate stories for Sight Words because the Sight Words are used in the stories.
Sight Words are words that are commonly used in written text and should be memorized. Phonics and Sound Exception words should be read.
The stories are made up of a Phonics, Sound Exception, and Sight Words.
Before you begin to read each story, look at the Sight Words listed on the Title Page and go over these words with your child. The Sight Words are revisited often so your child will get a lot of exposure to the various Sight Words as he/she is reading.

There are also Sight Words Videos, and Flashcards for more practice.