Two rowdy twin brothers below her … Two older twin sisters above her … And Mimi is always stuck in the middle.

Summer is around the corner, and Mimi is looking forward to enjoying it with her favorite cousin.

But then, piece by piece, Mimi’s summer plans start to fall apart, and before she knows it she’s in the worst situation she could have ever imagined. With pressures on every side, Mimi is feeling more “squished” than ever. Can she survive the summer without going completely crazy?