'Coolgrammar' books are a series of comic books on English Grammar. These are innovative comic books to create interest in grammar as a subject, through stories which are adventurous, mysterious and magical in nature which you would love to read, experience in your life or live it in your dreams.The topic "Present Tense" has been described in an utmost interesting way through a story of 4 children, personifying the four sub-division of Present Tense going on an adventure, with lot of magical instances. These characters speak in their respective tenses namely Simple Present, Present Continuous, Present Perfect and Present Perfect Continuous. There is another important character, a wizard, who plays the role of explaining the rules of grammar and rectifying them whenever necessary.