Sorta-Sisters-A-Rooney

Als das Schuljahr in Kalifornien beginnt, kehrt Cousine Ruby von einer Sommerreise zurück. Begeistert davon zwei „Fast-Schwestern“ zu haben, kann Ruby es kaum erwarten selbst eine Schwester zu sein.

Liv, Maddie and the rest of the Rooney family are excited to start their new life in California. As the school year begins, the Rooney's cousin, Ruby, returns home from a summer trip. Excited to have "sort of" siblings, Ruby can't wait to finally be a sister but finds herself in the middle of a sister-fight between Liv and Maddie. Meanwhile, Joey and Parker attend their new Science and technology school and their experience is not what they expected.

Ruby, la prima de los Rooney, vuelve del campamento para el inicio del nuevo curso en California y está deseando que Liv y Maddie sean sus nuevas 'medio hermanas'.

Os Rooney começam uma nova vida na Califórnia.