While in Europe searching for their missing father, the Hardy Boys meet Nancy Drew and team up on a case that takes them to a rock festival in Transylvania held at Dracula's castle.
The Hardy Boys and Nancy Drew meet a group of musicians and Joe talks them into playing a gig at the Dracula's Castle festival, with Joe as one of the singers, so they can get in to search for their father.
On a trip to Egypt, Frank and Joe find themselves in a ploy of artifacts and smugglers, so it seems. In a confusing chase after a nameless girl, the troubles looms around them.
While answering to a letter from an old friend, Frank and Joe ends up in superstition of something more than lights in the air. A disappearing boyfriend nd no trace, except ETs???
A man steals diamonds from a smuggler replacing them with fakes. Unaware, the fakes are given to a courier on same flight as the boys. The thief has drugged the pilots in hopes the flight will crash and fool the intended mob recipients.
Fenton calls the boys from Mexico. He needs them to bring his lock box. They arrive and think two girls are the contacts he said would meet them. But Fenton is held prisoner by a man who wants the contents of the box to hide his identity.
Nancy sees someone stealing a watch. The thief turns out to be a rich girl and a kleptomaniac. She is a competitor in Las Vegas' tennis tournament. Lots of jewellery around the casinos starts disappearing.
A deaf girl in Las Vegas sees a man on a call and reads his lips about bombs at a hotel. She and a friend tell the manager who doesn't believe her. Joe and Frank try to help them. The man realizes she can identify him so she is in danger.
A burglar dressed as Santa. A drifter in a stable next door, gets accused for burgling. Nancy don't believe that this gentle man is guilty, so she starts looking for clues. A mysterious car around. Who and what is going on?
Nancy is driving home from Manhattan and hits a pedestrian who accidentally steps in front of her. He is taken by ambulance and she is questioned by police. Later she learns it wasn't the police and all evidence of the accident is gone.
Joe is meeting up with the band to sing the last song. At the after party, Harry , the female, is not showing up. The day after she's arrested for hit and run, but she tells Frank and Joe she saw the accident and reported it to the police.
A girl accused of being a witch for seeing things before they happen. A house with a life of its own? What secrets does the house have, and how to solve the girls problem with superstitions around the town?
Joe is in Hong Kong with Frank and his father to help a friend of his father with a man's defection. Joe's in an accident and when he wakes up he is told that he's been in a coma for a year. He is then approached by a government agent who tells him that Frank and his father were killed when they tried to bring the defector in, possibly betrayed by his friend. He asks Joe about the details and he tells him. But Joe doesn't know is that he was tricked into revealing where the meeting is.
Frank and Joe go to New Orleans for Mardis Gras. And they manage to find a room. But a man, Mr. Dove for some reason wants them out of the room. So he asks someone to lift their wallets, hoping that they will leave but don't. And they run into Nancy Drew who's there on a case of her own.
Mardi Grass festival. A high priest of voodoo performs at a club and some people gets hurt and some in coma. Frank and Joe is warned to get straight out of town. They see things one minute and next it's gone. What is happening?
While on holiday in Hungary, a troubled girl uses Frank to get away from her pursuers, by kissing him. Nancy Drew is also dragged into the ploy, with a bag-switch. On the train, danger around every corner. What's next?
In Hawaii, Frank windsurfs and sees a girl also windsurfing who flips over. He goes in to find her but can't. He later meets the girl's father who says that he hasn't seen her in 2 years. He asks Frank to find out what she's been doing.
Nancy has been missing for 6 months, after working on a case, and everyone thinks she's dead, except Frank and Joe. Nancy has left one clue for them. Police are busy with an arsonist's work around town, and cannot help search for Nancy.
