"A destiny tossed about, in an insane world---

A flame of life blazing forth, in a dying world---

And now, one more future that is spun---

This is the alternative ending unable to be told before:

A very great, a very tiny, a very precious...

Tale of love and courage."

Muv-Luv Alternative continues the story of Shirogane Takeru after the events of the original Muv-Luv. This is a tale of a love so deep it breaks all barriers; about courage in the face of adversity and overcoming hardships. Takeru encounters insurmountable odds while his entire world is turned upside down around him.

In Alternative, Shirogane Takeru wakes up three years after the end of Unlimited to find himself back in his room. Although he first thinks that everything that had happened to him was a dream, he soon feels that something is wrong, and leaves the house to find that he has been sent back in time to the beginning of the events in Unlimited. Unwilling to accept something like Alternative V, he decides to help Professor Kozuki to complete Alternative IV and save mankind.