When Fin and April go to Florida for the summer vacation, strong winds and lots of rain comes to Florida and a Sharknado comes and destroyes Florida. The Sharknado goes to Washington D.C. and sharks falling from the sky. It's up to Fin and April to stop the Sharknado the third time.

Jessica Darling's older sister gives her the "IT List," a checklist on how to navigate the middle school popularity hierarchy. The instructions appear simple enough to follow, but like life, nothing is as easy as it seems.