描述三位笨拙、不受欢迎的男孩成为爱情影响家的助手,并作为爱情丘比特奋斗的故事。三个人住在一个教堂翻新的Share house,在每天错误百出的恋爱妄想谈话中,面对着“各种各样的恋爱形式”。。7-year-old Bertil's parents are at work and Bertil are home alone and bored. He is the only child in the family since his sister Martha died of an illness. But everything changes when he meets little Nils Karlsson Pyssling and they become friends. Nisse who lives in the basement in a room he rents from the rat Tjofsan,wich is cruel.。