5 high school students get Saturday detention. One tries to find her sister's killer. When hit by a computer virus, the school goes on lockdown and the killing continues.

Four friends/fledgling entrepreneurs, knowing that there's something bigger and more innovative than the different error-checking devices they've built, wrestle over their new invention.

Daring British WWI fighter pilot James "Biggles" Bigglesworth and 1980s low-level business executive Jim Ferguson discover that they can time travel to each other's eras. They try to stop the Germans from changing the outcome of WWI.