Entertaining sequel to "Johnny Tsunami" finds Vermont-based snowboarding teen Johnny returning to his home state of Hawaii for his grandfather's wedding. While there, he helps his run his relative's surf shop and catches plenty of waves. But when his "uncle" (who happens to be the 12-year-old son of his new step-grandmother) gets involved with a dangerous gang of mountainboarders who threaten his family's business, Johnny steps in to save the day. Brandon Baker, Jake T. Austin, Cary-Hiroyuki Tagawa star. 92 min. Standard; Soundtrack: English Dolby Digital 5.1; featurettes; music videos.