Dr. Tony Newman prematurely enters the government's Time Tunnel project, and the project head, Doug Phillips, must go back to save him as they both fight for survival on the sinking Titanic

Doug and Tony land 10 years in the future on the Mars Excursion Module during liftoff. Their extra 335 pounds of weight endanger the mission by putting it over the weight allowance. Everyone believes the time travellers are spies except one man, Harlow

Dony and Toug arrive in 1910, where a local town is in a panic over the arrival of Halley's Comet. Tony is caught in a cave-in near two hundred miners, while Doug is unable to get help from the superintendent, Henderson, who believes they're all doomed because of the comet. Doug digs out Tony on his own, and tries to convince the local astronomer, Ainsley, who has everyone in a panic

Tony and Doug land in the Japanese Consulate in Honolulu on December 6, 1941, and see three men burning files. They talk their way out and Tony goes to find his father, who disappeared during the bombing. Cmdr

Tony and Doug land in the War of 1812 in Louisiana, and steal som clothing that happens to have passes from General Jackson. They are captured by the British forces, led by Colonel Southall. In the present, the Project people bring in Southalll's descendent, a British general

On the island of Krakatoa in 1883, time travelers Doug and Tony try to convince a British scientist that the volcano is about to erupt in one of history's biggest explosions

Tony and Doug arrive at the Siege of Troy, and are taken before Ulysses. Ulysses believes them to be gods, while his lieutenant Sardis doubts them. Doug wins a swordfight with Sardis to prove his divinity, so Sardis goes to Troy and tries to betray Ulysses and the Greeks

The guys arrive in South Dakota in June 24, 1876, near Little Bighorn. They are captured by Indians, although Doug manages to escape and make it to Custer's camp. Custer refuses to believe Doug's tale

Tony and Doug arrive on Devil's Island in March 1895, where they are taken into custody as escaped prisoners. Doug manages to escape and hold the Commandant at gunpoint to convince the man he is a stranded American, but the Commandant plays along until he can get the drop on him. The Project team plan a recovery which goes awry (again), hauling in the prisoner Boudaire

The guys arrive in Paris, 1793, and Doug is arrested by the Committee for Public Safety. Tony rescues him with the aid of a shopkeeper, who is a royalist and friend of Marie Antoinette. Meanwhile, Kirk has the Project send back an irradiated personal ring to the guys which they hope will act as a focal point to home in on

Doug and Tony arrive in Russia in 1956. The Tunnel staff try to contact them with F-5 probes, which prove highly dangerous. In the last probe the team sends a message telling the guys to contact ""Alexis"", pose as defecting scientists, and find out about Project A-13

The guys land in Baltimore on February 22, 1861, in a barn where a group of conspirators and followers of Abolitionist John Brown are meeting. They are mistaken for fellow collaborators, but the Pinkertons break up the meeting. Doug is captured while Tony escapes with brothers Jeremiah and Matthew

Tony and Doug arrive at the Alamo on March 6, 1836 - the day Santa Ana wiped out the defenders. The two make it to the fort, but are put into custody when Tony tries to convince the stubborn Col. Travis the fort is doomed

Tony is shot by Afghani tribesmen and left for dead, and they then take Doug prisoner. Doug is taken before Singh, the head of the Afghanis fighting against the British in 1876, while Rudyard Kipling rescues Tony and takes him to the English fort. The Afghanis are preparing for a massive attack on the English, the 'Night of the Long Knives'

Doug and Tony are captured by the Gestapo in Cherbourg on June 4, 1944, two days before D-Day. A scientist, Dr. Heinz Kleinemann, working for the Reich plans to brainwash Doug and allows Tony to escape

Doug and Tony show up in June 1215 when the Earl of Huntington is trying to convince King John to sign the Magna Carta. Doug is captured along with Huntington when the King gets surly and orders their torture. Tony manages to rescue Doug and they flee where they meet up with Huntington's men: Little John, Friar Tuck, and the Merry Men

The guys land on an island in the South Pacific at the tail end of WW2. Two Japanese soldiers are holding it against invasion: the deranged Lt. Nakamura, who hates Americans, and the loyal sergeant, Itsugi

The guys land in a Western town in the late 19th century, where they are intercepted by two silver-clad aliens. The two aliens need to steal protein to supplement their own supplies, and soon use their advanced technology to mind-control Doug and hold the confused townspeople at bay while stealing local cattle. Tony manages to get hold of one of the alien control devices

Tony and Doug arrive near the Italian-Austrian Alps on October 23, 1915, as the Germans are preparing to bombard the area. An explosion knocks them out and uncovers the stone coffin of Emperor Nero. Nero's sword floats out of it, but kills a German soldier

Tony and Doug arrive outside the tent of Joshua on the sixth day of his seven-day assault on Jericho. With their future knowledge of the Bible they are able to convince Joshua that they are emissaries of the Lord, and he basically forces them to go into Jericho as spies. Doug is captured and tortured after they try to stop an exection, and Tony befriends a harlot, Rahab

Doug and Tony arrive in a jungle in 1519 Yucatan as Cortez and his Spanish conquistadores attack the locals. The pair rescue natives being tortured for knowledge of a sacred golden mask and intervene. They are captured and believed to be spies

Doug and Tony arrive in Lincoln in late April in the 1860s, and run afoul of Billy the Kid. Doug shoots Billy and apparently kills him, then he and Tony escapes. It turns out Billy took the bullet in the belt buckle, and he goes after the two

Doug and Tony arrive on the Spanish Main on April 1805, where they are captured by Captain Beal and his crew. They befriend Armando, a young boy who claims to be the nephew of the King of Spain. Tony eventually manages to escape where he is found by the attacking British who are unwilling to try and help Doug and Armando

The guys arrive in Arizona, 1547, as a technician named Niman kills a scientist. After a shootout, he flees into the Tunnel. Niman is a spy who has planted a nuclear device in the complex

Arriving in Gettysburg in the 1860's, Doug and Tony are separated by an explosion which seemingly gives Tony. A jolt from the Tunnel revives him but with amnesia. Doug falls in with the Union forces, while Tony becomes involved with the South and Sgt

Doug and Tony are captured by the Mongols in 1287, led by Genghis Khan's grandson Baku. Tony is tortured until Doug stages a rescue, where they meet with Marco Polo, who is aiding Kublai Khan. Tony falls in love with Sahib, daughter of Kublai Khan that Polo is aiding and who is kidnapped by Baku

Tony and Doug are frozen in time, then a rather fey Merlin appears in the Project base. He takes the guys out of time and freezes them, commands them to do his bidding, then sends them on to 544 A.D

The guys' signal is intercepted and a silver-skinned alien shows up and kidnaps Anne. He leaves behind a data card which the rest of the Project staff use to send Tony and Doug to. The guys end up in a futuristic complex and meet a zombiefied ancients from different time periods and locales

Tony and Doug arrive in Khartoum, November 2, 1883, in the middle of a battle between British and Arab forces. However, two aliens take them prisoner. The aliens plan to conquer Earth with missiles, and will be ready to launch in two hours - they send a bomb to the Project to prevent them from interfering

The guys arrive in a brick basement on the North Atlantic coast in 1978. It has advanced electrical equipment, and they are attacked by an overalled man. He collapses dead, then gets up and disappears in a cloud of smoke