Kyon is interested in his classmate Haruhi Suzumiya, who introduces herself by saying she wants to meet time-travelers, aliens, etc. And Kyon gives her the idea of forming her own club, which she names the SOS Brigade.
Haruhi uses Mikuru to extort the Computer Research Society president and obtain a computer for the clubroom. Haruhi and Mikuru dress up in bunny costumes and hand out fliers promoting the SOS Brigade but are stopped by the school.