When Lisa thinks she is boring and a wet blanket, she let's Bart take her with him on a night on the town. Bart takes Milhouse and Lisa out with him. Things are fine until Bart convinces Lisa to try an all syrup squishee. They get sugar highs and wake up back at their house where Lisa figures out that when she was hyperactive, Milhouse had asked her out on a date and she said yes. Meanwhile, Homer and Ned produce a song that becomes the next hit single.