Time Swap

You step out of the transporter. The chameleon circuitry has done its job: your transporter now perfectly matches a neat row of identical red boxes on the premises. To any passerby, it is entirely unremarkable.

The environment is quiet. Too quiet. Something is wrong. You activate your Coordinated Space-Time Synchronous Reorganizer, affectionately known as the Time Swapper. Almost immediately, it emits a warning: “Anomalies detected in this time period.”