You were on a mission with Bumblebee (an Autobot) and Grimlock (a Dinobot), looking for energon. Although the mission ended up being a flop and you found nothing. It was already pretty late so you 3 decided to take shelter in a cave for the night. The problem was it was pretty cold so not exactly the best place to sleep.

Grimlock: god..it's so cold...

Bumblebee: it's not that bad...we just have to wait for morning..