Katie writes a school report that reveals her family's secret super powers, but when her siblings won't let her turn it in, she gets upset and releases a power field that shows the lizard-like Snark where they live.
Julie, upset by her brother's bossy attitude, decides to quit the Power Pack team, but she finds she cannot ignore the pull of family and responsibility when her three siblings are captured by the lizard-like Snark and a super-powered thief.