"You" were supposed to go to a movie with your brother Pat and friend Arnie, but Pat makes you late. You instead end up in a mysterious store with a man called Chronos. He warns you of a "time bomb" that threatens to destroy time itself; and asks for your help to defuse the bomb. Depending on whether "you" accept, you can either face the Zodiacs (physical representations of the zodiac signs) or Time Police.
Danger Time provides examples of:
- Adults Are Useless: In one ending you return home triumphantly after saving the world, but your parents only care that you were late home, so your reward is being grounded for a very long time.
- Annoying Younger Sibling: Your brother Pat fills this role.
- Chromosome Casting: No female characters appear, except in one ending where your mother appears briefly. (The book explicitly assumes "you" are male.)
- Fatal Flaw: Your brother Pat is always late. This is what gets you involved with Chronos / the Time Police in the first place (because Pat made you late to a movie you wanted to go to), and leads to some of the bad endings. In one of the good endings, everyone's given watches as a prize, and you hope this means Pat will finally manage to be on time.
- Intercontinuity Crossover: On the cover, another GYG book You're Plant Food! can be seen in a photo frame on the right.
- Luck-Based Mission: In this book, you come up against the Zodiacs: representations of each star sign. Subsequently, certain choices are affected by your real life horoscope and, if you have the "wrong" sign, it's impossible to get around some of them without cheating.
- No Ending: Should you choose to press a button marked "Time Loop", it sets up an actual time loop where you are repeatedly stuck pressing the button.
- Ret-Gone: One bad ending involves you meeting a version of yourself from another moment in time. Since this breaks the laws of time travel (that you can't be in two places at once) the reader is erased from time forever.
- Swiper, No Swiping!: A good ending in the book amounts to this, with you essentially just telling the Time Police to stop, and it works. You tell Chronos they wouldn't dare stop you getting into the movie you wanted to see.
- Temporal Paradox: Comes up in some of the choices you may have to make.
- The Little Shop That Wasn't There Yesterday: You end up in one of these at the beginning of the book, kick-starting the plot.
- Time Police: The book features a set whose motives vary depending on the storyline.
- Time Stands Still: At least two bad endings involve time being frozen forever because you smashed something (a watch or hourglass) that was controlling the flow of time.
- Time Travel: Part of the plot involves you traveling through time to defeat a set of villains, who vary depending on the storyline.
- Video Game Cruelty Punishment: Chronos asks Pat to protect a watch that apparently controls the flow of time. If "you" decide you should be in charge just because you are the older sibling, you grab the watch from Pat and end up breaking it, leading to a bad ending.
