The drama takes place in the whimsical world of Jolywood, where "Queen of Joy" relies on 7D - Happy, Basful, Sleep, Sneezy, Dopey, Grumpy, and Doc - to maintain order in the kingdom. In front of them were two ridiculous evil villains, Green and Hildi Grom, who conspired to take over the kingdom by stealing magical jewelry from the 7D mine. With seven distinct personalities, 7D always manages to save the day by allowing Green and Hildi to run back to their evil lair and try again.