Hannah, the headstrong rebel of seven siblings, tries to avoid the preparations for her parent`s wedding anniversary, but her charming brand-new lover Victor sort of drags her along, and soon proves an ideal son-in-law, which arouses mixed feelings in her. The sister in law who for years tries to fit in but always felt ignored gets a fit because Victor is immediately invited to chip in and join the anniversary river cruise, so they take over the organization from her.