Orphan Kamilla moves in with her rich uncle who lives in Kristiansand, Norway in the early 1900s. Her uncle’s wife, however, does not approve of Kamilla and wants to send her to a boarding school in Denmark. Her uncle, instead, decides to send her to his sister who lives in the countryside. On her way there, she meets Sebastian, who is a good-hearted thief who wants to turn his life around. An adaptation from a Norwegian children's novel by Kari Vinje.

Kamilla and the Thief - Part 2 continues where the first Kamilla movie ends. Sebastian going to jail, but Kamilla did not fail his friend, even if she refused to have contact with him and is bullied because she is "a friend of a thief." Kamilla is the only one who believes in Sebastian when he says that he will not steal. Can Sebastian to keep that promise? Kamilla is faithful - but is it enough?