Willow Rowley is heartbroken. Her grandmother has recently passed away, but she doesn't have time for grieving. Willow and her family discover in the will a secret house that no one except for Majorie Blake knew existed. She is dragged by a mystery her late grandmother set up for her, but it may be more difficult to solve it than she first thought. Willow is not the kind of girl to give up. Nonetheless, help comes in the weirdest form: Alexander Chen. A neighbour that met Majorie and a boy who hides a secret behind all his cuteness (according to Willow). Together, they'll embark on a new adventure, but they don't have much time, just until the end of the summer, to make it memorable. Or will it be all just a summer goal ended in failure? Just another story to small talk and not to make history? And what's Alexander hiding?