Brett is preparing to take the U.S. citizenship test, but loses his lucky American flag sweater that his mother knit for him. When Danny and Justin find a street dancer wearing the sweater, they try to win it back by having the bar crew (as "Danny's Boyz") challenge the performer and his crew to a dance-off. Meanwhile, Burski wants Danny to prove his friendship by helping him find the perfect birthday gift for Leslie. (thetvdb.com)