On summer vacation, as a favor Katie decides to pretend she is a girlfriend of Alex for the summer in order to protect his job. With a background of summer sun, they develop a friendship that is on the verge of turning romantic, when who should arrive but Nicole Kendall, Alex's old girlfriend. In three days, Nicole ruins Katie's relationship with Alex. In retaliation, Katie feigns interest in Logan, Lisa's handsome older brother.
Katie soon finds out that not being totally honest in a relationship can cause problems she had not dreamed of.