 In 2004, he left Kloten to join Frölunda HC in the Swedish Elite League and helped the team capture the title in his first year.After signing a one-year deal with Frölunda in 2004, he signed another one-year deal to stay with the team for the 2005–06 season.Despite offers from other teams, Plüss signed yet another one-year contract with Frölunda in 2006.