The wall pulses again, the light growing brighter and more intense as it becomes aware of their presence. The barrier seems to be debating; weighing the value of allowing these intruders access against its own divine purpose. After what feels like an eternity, the light fades slightly... Perhaps there is hope for them after all.

The barrier shimmers and fades away, revealing the egg waiting within. The human sperm have made it through; their tenacity and resilience rewarded with access to the prize they sought. They swim quickly towards the egg, ready to fertilize it and begin the process of creating new life.