This book introduces the present perfect tense after students practice the past participles of irregular verbs. The story follows two little girls who create their own mission game called Mission Possible. Using their cell phones to communicate, Emily assigns nine missions to Annie, who eagerly takes on each challenge—from putting on mismatched socks to picking up Emily’s bike from school. Though she makes a mistake along the way, she completes every mission with enthusiasm. In the end, a surprise awaits her!