When film star Megan Valentine (Jessica Simpson) suddenly finds herself broke and humiliated in the public eye, she wanders from the wreckage of a car accident and witlessly enlists in the United States Army, hoping that it will change her life. The spoiled actress immediately finds herself at odds with her tough drill sergeants and the harsh discipline of army life, leading to many humorous situations. As Valentine navigates this new reality, she undergoes a transformation from pampered starlet to capable soldier, earning the respect of her fellow trainees and ultimately graduating with them. Through her journey, Valentine proves that even the most unlikely person can change and grow.