Flash returns from his tornado trip, but not for long. In a case of mistaken identity, Wayne becomes a new member of the group - his visit to Base not only brings back Weirdo but an interesting turn of events that finally forces the Whizzes to travel through time. Experiments: Tornado in a bottle, anti-gravity water, wind-speed meter, CD spectrometer.

Using the alien CDs for the first time, the Whizzes travel into a very strange kind of world. They are surrounded by a huge jungle but they are not aware that there is a real danger lurking in the jungle. Will they be able to get out on time? Experiments: 2 types of compasses, yogurt tub microscope, elastic band catapult,straw oboe, umbrella amplifier

The Whizzes hope to return to the present but alas they end up again in the past. They are not sure why they are there, but if they don't find Weirdo quickly, they may never ever return to the present again. Experiments: what's in a floppy disk, Leyden jar, Magnetic drawing pen, quick periscope

Gene has sprained his ankle and is stuck at home. Bored, he begins to spy on his neighbour, Mr Ch'ng and to his horror, he discovers that a murder has taken place. Experiments: silver tarnish remover, a home made telescope, a burglar alarm, and Vitamin C rocket.

It's Saturday and MC is free for some special time travelling. Unfortunately Gene is obliged to stay at home. He manages to trick his mum into performing a number of interesting experiments - but it is she who will have the last laugh. Experiments: cabbage juice indicator, slime, soya bottle volcano, carrot top plant, potato clock and baked ice-cream.

The Whizzes receive a message written in invisible ink - they think it's a trick, but MC suspects that it's message for help. They attempt a rescue but it leads them to a strange world where a Princess traps people in white light. Will they be able to save themselves in time? Experiments: Invisible ink, a time tunnel maze, pin hole camera, water-prism.

Mr Ch'ng has given the Whizzes only 2 hours to prepare for a science show. They have to succeed or else...The problem is Gene and Wayne are more interested in playing than preparing. Then in the middle of the show, the alien CDs disappear. Experiments: Needle in a balloon, a balloon bagpipe, a balloon in space, UFO balloons and two types of hot air balloons.

In an attempt to rescue Weirdo, the whizzes land in a very strange world inhabited only by kids. Their leader is none other than the nasty Thief. Fighting against Time, the Whizzes have to save Weirdo, help Thief and run away from the pigmies who are not really vegetarians. Experiments: singing rope, mosquito coil alarm clock, chalk paint, rope fan.

It is exam time and in an attempt to foil thieves, Mr Ch'ng has the exam questions locked up in a maximum security room. But then, they were stolen. And somehow, the Whizzes end up holding on to the stolen diskette. Experiments: electromagnetic hook, test for reaction time, steam tong robotic arm, matchbox phone

A crop circle appeared out of nowhere. Is it a message from an UFO or is it a fake? In an attempt to discover the truth, MC gets closer to finding her biological mother. Experiments: hot air spiral, casting footprints, straw magnetic metal detector, magical dot to circle, ink chromatography

SAFE has been kidnapped. The Whizzes go through their list of suspects but the real culprit is unexpected. Experiments: Dusting and making fingerprints, a long distance listening device, an ant farm, a probe, a burglar trap.

Weirdo and Gene fish up a message in a bottle. It is a call for help - but when the Whizzes and Weirdo go on a rescue, they end up in an island with a soldier from WorldWar 2. Experiments: writing with ink from a squid, make an astrolabe, make a record player, a water wheel, plastic, rope and weaving with a film spool.

MC finally meets her biological mother, but it's not 1993. It's the present. She needs her help - there is a mad scientist bent on destroying not only her mother but MC as well. Is this the Whizzes' toughest assignment or what? Experiments: stomp rocket, flying water bombs