A shared passion can forge the most unlikely of friendships. Bo Lin (Chen Bolin) grew up in a wealthy family and Yu Si (Alan Kuo) is the son of a butler. But the two teenagers become good friends because of their shared love of bicycles. But will the love of the same girl, Lan Lan (Margaret Wang), or a change in Bo Lin’s family circumstances alter the boys’ friendship as they grow older? “Sonic Youth” is a 2002 Taiwanese drama series.