
A trip to the store for Custard, Buzz, Brianna, Jazz and Kea is interrupted by the arrival of super-villain Dr Gloom and his plans to gloomify the town using technology that has weaponized depression.
Cornered in Dr Gloom's secret underground lair, Custard must rescue Kea and escape with the super-villain's most vital piece of technology: 'The Thingy'.