This book is the 5th offering of the Marv series, a new tale where an ordinary boy once finds that his super-hero skills are in very much in need and this time, it is to save his school from trifid-style plants and the supervillain Violet Vine.

The story starts with Marvin as the ordinary school boy, working hard but not achieving the win he thought deserved in the school-garden design competition. But as soon as work starts on the garden, the school and its pupils are under threat from invading vines, and Marvin has no choice but to transform into Marv the superhero. He has to act quickly and win this time if he is to save his best friend, his teacher, the whole school from being strangled or eaten by gigantic venus-flytraps. Along with his sidekick robot Pixel, they become involved in a fast-paced, action-packed range of scenarios where finding a weakness is the only way of defeating an almost invincible enemy.

The book is packed full of illustrations that accompany the action and the story contains themes of friendship, forgiveness as well as endless determination. It also has humour; the headteacher is simply not impressed with the behaviour of these plants!