Starting summer break Kakeru is left at home alone after his family has left for vacation or business reasons. This giving him at least seven days of freedom to do whatever. But, this wouldn't be a normal break for him, when he is asked by a beautiful girl to help her and her friends. Kakeru learns that the girl along with her three other friends are escaping a government orgainization that wishes to control their psychic powers. And at the heart of it Kakeru is destined to save them all.