Arlo Clark, or people call him Arlo, Arlo is quite popular in the school because of his handsome appearance and serious expression, Arlo never smile in his entire life, many girls have a big crush on Arlo, but Arlo just ignore them and Arlo also has many friends, but many students curious why can't Arlo just smile for once, but still Arlo is popular in the school for his looks and the way he action only.