When the problems are unsolvable, sometimes you need a big solution. Mr. Big Toe ventures out at night to solve the problem of the squeaky stair. With the help of some the mice friends and a new one, Hey Hay Horse, he will venture into the dark space under the stairs. Before he can solve and get home, he will have to get past a silky and sticky new villain, The Corner Spider. Join the adventure of a lifetime, or at least the span of a staircase.