Oh Krishna! Where are you? You danced with the milk maid and played the flute! You are an incarnation of Vishnu embodied in Krishna, I'm sure it tied into Jesus and Christianity.
The example of Siddh%u0101rtha Gautama meditating under the Bodhi Tree, Krishna's love, and God's Love can be described as ways to free ourselves from attachment of sense objects. Religion is one way to commune with God or Gods, but moving from that mind set can bring another level of freeing ourselves from our physical bodies and Samsara. I see that in the animation, the puppet is enslaved by society by getting a job, going to school, being rich, etc. He either went to hell or heaven. The main meaning of this song and animation can mean that we live in a physical world that is temporary. Nothing is enduring unless you free yourself from attachment of dualities. One way is love(Love for Krishna/ yoga of renunciation), the other is reject the world like what Buddha did, and the final one is to either let god into your life like St. Augustine or detach everything in you and only then do you know God like Meister Eckhart. Not sure if I'm correct but I think I can most of it.
Sources: Introduction to Philosophy and Religion class in college, books: Bhagavad Gita, Augustine: Confessions, and Meister Eckhart's from whom God hid nothing.
Nice animation and song. When I saw Krishna, I knew where it was going, I think.