Sarah Robbinson is the new girl at East High. She soon becomes enemies with Tiara. Sarah and Tiara are battling against each other to get the lead role in the school's musical. Tyler (the boy Sarah/Tiara like) is falling for Tiara and Sarah, but can't choose who. Who will Tyler choose? Who will get the lead role in the play? We also catch up with Troy and Gabriella while on a weekly "getaway" of romance. Chad and Taylor are also still destined for love. Sharpay is back and wants Troy; will she ruin ALL the wildcats' friendship or just Gabriella and Troy's?