Just in Time!

It is the birthday of the Viking leader. So, his wife and little son thought of arranging a surprise party for him. They even made him a nice, big birthday cake in his favorite flavor. They are waiting for him to come and get surprised, but will they get surprised before him due to the arrival of an unexpected guest from the future?

Time travelling is one of the most discussed concepts of Science. In this build, I tried to represent some scientists working on a time machine in a modern lab. Finally, they succeed in travelling through the time into the past, just in time to have a piece of blue birthday cake!