Interesting story, great cast and lots of fun. Tim Allen, Sigourney Weaver, Alan Rickman, Tony Shalhoub and Daryl Mitchell are the cast of a classic sci-fi TV show and it has been 20 years since. They always appear in sci-fi conventions just for money. Tim is egoistic and narcissistic, often turning up late but most popular. Alan dislike him the most. In the toilet, Tim overheard some people laughing at his stupidity and he snapped during the autograph. Real aliens Enrico Colantoni, Patrick Breen, Missi Pyle, Jed Rees find Tim to be their ship commander and to negotiate with alien enemy Robin Sachs. Tim thought they are just from another show and follow. When Robin demand the omega 13 (the show's secret weapon), Tim order the crew to fire at him and leave. He then realize they are real aliens when he is cover in jell and transport thru space and back to home. He knock into super geek fan Justin Long and took the wrong transponder given by the aliens. Tim ask the rest to join him when Missi appear again to go back for negotiation. Sam Rockwell who is an extra actor also tag along. The rest also thought it is another gig but is startle when they go thru the transportation. Tim is still hype up and command Daryl to pilot the ship. When Enrico show them what happen to the last commander been torture by the enemy, the crew realize this shit is for real. They can't return as the enemy demand his request. They were attack and then force to go into a magnetic minefield. Suffering heavy damage to the ship, the crew need to find a energy source from another planet to power up the ship. Tim devise the plan to get it from the small alien critters but is stranded. When the alien told Tony there's a way to save him by digitizing him but it never succeed before. Tim ask him to take a shot and Tony who like Missy and feel power up after seeing her take the shot and save him. The enemies taken over the ship. Enrico still believe in Tim. When he show their drama to Robin, he laugh and force Tim to reveal the truth to Enrico. Robin order them all for death into space. Tim and Alan pretend to fight, copying 1 of the episode and they over power the captors instead. Alan and one escaped alien who is a big fan of him went to save the rest trapped in suffocation chamber. Tim and Sigourney use the transponder to contact Justin who guides them around the ship. Daryl watch the old episodes and learn to pilot. Tony digitize the rock monster who is fighting Tim back to the ship to kill the other enemies still on board. When the alien got shot dead, Alan went berserk and fight the aliens. Tim manage to stop the ship from destruction. They go into the mine field again to lure the enemy. Then dragging the mines, they head towards the enemy and blow it to bits via the mines. They have to separate when going back to Earth and Tim tell Enrico he is a good commander to be and pass the baton to him. Robin still not dead appear as Tony and then kill everyone in the deck. Tim activate omega 13 which is actually a device to go back in time 13 seconds. Tim manage to stop Robin and the ship landed at the convention which they are late for. The fans go crazy when they appear in such manner. Robin appear again and Tim kills him with the ray gun. The show is back on again due to the popular revival. Tony and Missy are an item and she also appear in the show. Sam also got a bigger role instead of been an unknown extra.