Jaegun ("Bifern" Anchasa Mongkhonsamai) from Room No. 401 is confident in everything, except love. She doesn't dare to confess her love to Terk, a male cheerleader. Jaegun finds out Terk is falling for a tomboyish junior student Min. Instead of telling Terk she is in love with him, Jaegun chooses to compete with Terk in wooing Min to prove that the Min doesn't like guys. The mysterious Min (Room 407) seems to use a lot of Hello Kitty stuff despite her tomboy appearance. Freshman student Tul (Room 402) is busy moving in as well as talking to his girlfriend on the phone, speaking a heavy Northern accent. The rather weird "Baitoey" (Room 408) declares that her door is "pink" even though it is obviously white. High school boy Camp (Room 406) is totally rude toward Jaegun as well as his own mother. In addition, the beautiful cheerleader Snow keeps pressing Jaegun to look for a vacant room for her in the condo.