Na začátku 21. století navštíví v tomto sci-fi seriálu naši matičku Zemi mimozemská rasa Taelonů. Přijeli prý v dobrém, poznávat a studovat naši civilizaci a pomáhat lidem v boji proti nemocem, hladomoru a zločinu. Jejich tvrzení ale v mnohých vzbuzuje nedůvěru, a je zformováno hnutí odboje. V jeho čele stojí poručík William Boone, který je poté, co zachrání život jednomu z Taelonů, mimozemšťany najat, aby se stal jejich prostředníkem v komunikaci s pozemšťany. Boone tak dostává šanci odhalit skutečné důvody, proč na Zem Taeloni vůbec přijeli.
Hrají: Von Flores, Leni Parker, Anita La Selva, Richard Chevolleau, David Hemblen, Robert Leeshock, Jayne Heitmeyer, Lisa Howard, Melinda Deines, .....Kevin Kilner, Guylaine St-Onge, Alan Van Sprang, Frank Moore, Richard Zeppieri, Majel Barrett, Andrew Jackson, Shawn Ashmore, Roman Podhora, Kristin Lehman, Simon Reynolds, Michael Sarrazin, Chris William Martin, Chandra West, Shauna MacDonald, Carlo Rota, Claudette Mink, Peter Mensah, Michelle Nolden, Andrea Lui, Reagan Pasternak, Christina Cox, Simon MacCorkindale, Michael A. Miranda, Fiona Loewi, Jeff Wincott, Danny Mags, Vince Corazza, Tamara Gorski, Monika Schnarre, Chuck Campbell, Françoise Yip, Michael Filipowich, Ksenia Solo, David Berni, Meredith McGeachie, Maurice Dean Wint, Arlene Duncan, Kathy Maloney, Rod Wilson, Kristi Angus, Shawn Roberts, Mark Humphrey, Elisa Moolecherry, Hrant Alianak, Ylfa Edelstein, Lara Daans, Paul Braunstein, Mark Lutz, Roberta Angelica, Ellen Dubin, Anne Openshaw, Landy Cannon, Sadie LeBlanc, Noam Jenkins, K.C. Collins, James Kidnie, Eugene Clark, Janet-Laine Green, J.C. MacKenzie, Tyrone Benskin, Jonathan Higgins, Sarah Lafleur, John Ralston, Stewart Bick, Daniel Clark, Inga Cadranel, Bree Williamson, Lynne Griffin, Kate Greenhouse, Brooke Johnson, Anne Marie DeLuise, Jodie Dowdall, Jonathan Crombie, Angela Asher, Rafael Petardi, Kate Trotter, Robin Gammell, Rachael Crawford, Peter Keleghan, Kathryn Zenna, Kevin Jubinville, Jim Thorburn, Fiona Highet, Dan Petronijevic, Paulino Nunes, Park Bench, R.D. Reid, Judy Marshak, Bill Lake, Patrick Garrow, Dean Armstrong, Katie Griffin, Andrew Gillies, Sean Bell, Russell Yuen, Stephen Bogaert, Cedric Smith, Trevor Hayes, Stavroula Logothettis, Bruce Beaton, Brendan Connor, John Watson, Karen Holness, Joy Tanner, Wendy Lyon, Vladimir Jon Cubrt, Matt Birman, Richard Eden, Shannon Hile, Tony Nappo, Hamish McEwan, Janet Kidder, William deVry, Vieslav Krystyan, James Binkley, Philip Craig, James Kee, Matthew Bennett, Richard Clarkin, Shawn Lawrence, Patricia Zentilli, Johnny Cuthbert, Jonathan Welsh, Ayumi Iizuka, Jonathan Whittaker, Markus Parilo, John MacDonald, Martin Roach, Steve Cumyn, James Downing, Edie Inksetter, Geoffrey Pounsett, Aron Tager, Miranda Kwok, Alex Poch-Goldin, Shane Daly, Mark Burgess, Jody Racicot, Charlotte Arnold, Michael Rhoades, Maria Ricossa, David Mucci, Derek McGrath, Marvin Kaye, James Purcell, Matt Gordon, Michael Cram, Scott Gibson, Caley Wilson, Conrad Coates, Phillip Jarrett, Robert Dodds, Paul Miller, Caleb Marshall, Stephanie Belding, Walker Boone, Sandi Ross, Allana Harkin, Shaun Austin-Olsen, Larissa Laskin, Stacy Grant, Jeff Geddis, Drew Nelson, Damon D'Oliveira, Jonathan Potts, Thomas Mitchell, Brittaney Bennett, Kevin Rushton, Katherine Ashby, Dean McKenzie, Anthony Sherwood, Len Doncheff, Brian Frank, Malin Åkerman, Emily Hampshire, David Calderisi, Sam Malkin, Richard McMillan, Patrick Gallagher, Peter MacNeill, Colette Stevenson, Trevor Blumas, Bobby Johnston, Ken Girotti, Sonia Dhillon Tully, Pamela Matthews, Kari Matchett, Angelica Lisk-Hann, Blu Mankuma, Jim Codrington, Patricia Gage, Derwin Jordan, Paul Johansson, Richard Zeman, Liisa Repo-Martell, Sandra Caldwell, Mark Terry, Roger Dunn, Anthony Grieco, Desmond Campbell, John Cleland, Tre Smith, Dean Hagopian, Catherine McNally, Kevin Hicks, Raymond Accolas, Jean Pearson, James Gallanders, Stephanie Anne Mills, Dan Chameroy, Steven Allerick, Brenda Bazinet, Toby Proctor, Novie Edwards, Elle Downs, Jennie Raymond, Brett Porter, John Boylan, Jane Luk, Paul Boretski, Harrison Coe, Roy T. Anderson, Andrew Moodie, Jeff Kassel, Stephen Sparks, Jonathan Rannells, Lori Alter, Juan Chioran, Dave Nichols, Toni Ellwand
Archivní záběry: Richard McMillan, Derek Scott, Bobby Johnston, Lisa Ryder, Lisa Ryder, Nigel Bennett, Kevin Kilner
Režie: Stephen Williams, James Head, Allan Eastman, Bruce Pittman, Tibor Takács, David Warry-Smith, Martin Wood, Terry Ingram, Jim Kaufman, .....J. Miles Dale, Joseph L. Scanlan, Brenton Spencer, Will Dixon, Milan Cheylov, Michael Robison, Ken Girotti, William Gereghty, David Winning, Vincenzo Natali, Kelly Makin, Allan Kroeker, John Stead, Jeff Woolnough, Neill Fearnley, Rod Pridy, Brett Dowler, Damian Kindler, Ross Clyde, Gordon Langevin, Andrew Potter
Scénář: Gene Roddenberry, Cory Tynan, Brad Falchuk, Michael Goldberg, Harry 'Doc' Kloor, Brian Nelson, John Whelpley, Richard Maxwell, J.M. DeMatteis, .....Paul B. Margolis, Mark Amato, D.C. Fontana, Jennifer Barrow, George Geiger, Malcolm MacRury, Robin Bernheim, David Kirschner, Jonas McCord, Damian Kindler, Harold Apter, Fiona Avery, Stephen Roloff, Paul Gertz, George Carson, Eric Morris, Paul Aitken, Lisa Klink, Ethlie Ann Vare, Richard C. Okie, Michael Berlin, Howard Chaykin
Producenti: Stephen Roloff, John Calvert, Harry 'Doc' Kloor
Hudba: Micky Erbe, Maribeth Solomon
Kamera: David Moxness, Yuri Yakubiw, Michael McMurray
Scénografie: Stephen Roloff
Kostýmy a make-up: Paul Jones, Madeleine Stewart
Zvuk: John Douglas Smith, Martin Lee
