Underrunners

Tris Catt leads a double life as a seemingly ordinary boy by day and an alien superhero in his fantasy world. His secret existence is intertwined with the mysterious underrunners and hidden tunnels near his home. When Winola, a brave and eccentric girl, unexpectedly enters his imaginary realm, Tris initially dismisses her warnings about a threatening figure. However, their adventure soon spirals into danger, testing their courage and friendship as they confront a peril that endangers them both.