.. Warming up the hand

Aliens are weird little creatures - their kitchen doesn't feature a microwave or oven at all.

Maybe their experiments involve heating things up.

(The labs may hold something that could heat up the hand.)

Visit the botany lab - the strange machine near the door is, apparently, a microwave.

Use it to heat up the hand.

With the hand nice and warm, the jail cell can open. We finally got the train key!

Next up - the battery.