A young Twilight interrupts Celestia at an inoppotune moment.
Celestia's latest game of Save the Princess gets more serious than she'd have liked when she gets herself thrown into Tartarus. It would be bad enough if she were alone...but it seems she'd picked up a straggler as well.
Twilight discovers that Spike is...growing up. A quick retreat to the local pub ensues.
A routine rescue from a no-name villain goes wildly awry as Celestia is flung into the lethal, living nightmare that is Tartarus. No great problem for an immortal, but to Celestia's absolute horror, Twilight has followed her in.