Ghosts and Imposters - S1.E24

When Bumblebee decides to show his team the beauty of Earth, he takes them to a ghost town in the Far West where a Decepticon able to change form awaits them. As they wonder through the town, the 'Bots get into various hijinks and traps triggered by themselves. Afterwards, Bumblebee finds his team fighting something that isn't really there and stops them. The Decepticon opens various holes in the floor, trapping the 'Bots.